Benchmark: class vs class begin

HTML Preparation code:
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
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<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
<div id="id-selector" class="class-selector" data-selector="data-selector"></div>
Tests:
class
document.querySelectorAll('.class-selector');
begin class
document.querySelectorAll('[class^="class"]');
Rendered benchmark preparation results:
Suite status: <idle, ready to run>

Previous results
Test case name	Result
class
begin class
Fastest: N/A

Slowest: N/A

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Latest run results:
Run details: (Test run date: 6 years ago)
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36
Browser/OS: Chrome 62 on Windows
View result in a separate tab
Test name	Executions per second
class	2508.2 Ops/sec
begin class	1002.8 Ops/sec
class vs class begin (version: 1)

Comparing performance of: class vs begin class

Created: 6 years ago by: Registered User

Jump to the latest result

class

begin class

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A
