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Run results for:
Array concat vs spread operator vs push vs push FOR OF vs push FOR vs map vs multi spread
Compare the new ES6 spread operator with the traditional concat() method and push
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:131.0) Gecko/20100101 Firefox/131.0
Browser:
Firefox 131
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
concat
26073326.0 Ops/sec
spread
22338186.0 Ops/sec
push spread
32832564.0 Ops/sec
for of push
24510710.0 Ops/sec
for push
34555756.0 Ops/sec
map push
19893194.0 Ops/sec
multi spread
18216772.0 Ops/sec
Tests:
concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
push spread
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].push(...params);
for of push
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ]; for (const obj of params) { other.push(obj); };
for push
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ]; for (var i = 0; i < params.length; i++) { other.push(params[i]); };
map push
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ]; params.map(obj => { other.push(obj); });
multi spread
var params = [ "hello", true, 7 ] var other = [ 1, 2 ] other = [ ...other, ...params ]