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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) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36
Browser:
Chrome 128
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
concat
13771824.0 Ops/sec
spread
52569648.0 Ops/sec
push spread
64878144.0 Ops/sec
for of push
53427008.0 Ops/sec
for push
51802156.0 Ops/sec
map push
32730606.0 Ops/sec
multi spread
22132248.0 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 ]