Benchmark: delete vs undefined1

Tests:

undefined
var obj = {}; for(var i = 0; i < 1000;i++) { obj['a' + i] = i; } for(var i = 0; i < 1000;i++) { obj['a' + i] = undefined; }
delete
var obj = {}; for(var i = 0; i < 1000;i++) { obj['a' + i] = i; } for(var i = 0; i < 1000;i++) { delete obj['a' + i]; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
undefined
delete

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Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36

Browser/OS: Chrome 78 on Linux

Test name	Executions per second
undefined	2242.7 Ops/sec
delete	2799.4 Ops/sec

delete vs undefined1 (version: 0)