explicit conversion or in operator

JavaScript performance comparison

Test case created by Cezary Tomczyk

Preparation code

var global_result;

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Explicit conversion
if (document.addEventListener) {
  global_result = true;
in operator
if ('addEventListener' in document) {
  global_result = true;

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