Benchmark: Array.push - MeasureThat.net

Script Preparation code:

var n = 10;
function Person(name, age) {
  this.name = name;
  this.age = age;
}

Tests:

direct addition
var arr = [ new Person(1 + '', 24), new Person(2 + '', 24), new Person(3 + '', 24), new Person(4 + '', 24), new Person(5 + '', 24), new Person(6 + '', 24), new Person(7 + '', 24), new Person(8 + '', 24), new Person(9 + '', 24), new Person(10 + '', 24) ].join(',');
Array.push without comma
var arr = []; arr.push (new Person(1 + '', 24)); arr.push (new Person(2 + '', 24)); arr.push (new Person(3 + '', 24)); arr.push (new Person(4 + '', 24)); arr.push (new Person(5 + '', 24)); arr.push (new Person(6 + '', 24)); arr.push (new Person(7 + '', 24)); arr.push (new Person(8 + '', 24)); arr.push (new Person(9 + '', 24)); arr.push (new Person(10 + '', 24)); arr.join(',');
Array.push with comma
var arr = []; arr.push ( new Person(1 + '', 24), new Person(2 + '', 24), new Person(3 + '', 24), new Person(4 + '', 24), new Person(5 + '', 24),new Person(6 + '', 24),new Person(7 + '', 24), new Person(8 + '', 24),new Person(9 + '', 24),new Person(10 + '', 24) ); arr.join(',');

Rendered benchmark preparation results:

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Related benchmarks:

Array.push (version: 8)