Benchmark: Testing perfomance with let and var

Tests:

ES5
for(var i = 0; i < 10; i++) { (function (j) { console.log(j + Date.now()); })(i); }
es6
for(let i = 0; i < 10; i++) { console.log(i + Date.now()); }

Rendered benchmark preparation results:

Previous results

Test case name	Result
ES5
es6

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Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36

Browser/OS: Chrome 54 on Mac OS X 10.12.1

Test name	Executions per second
ES5	6500.1 Ops/sec
es6	6543.0 Ops/sec

Testing perfomance with let and var (version: 0)