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Run results for:
template literal vs array.join vs unallocated array.join vs string.concat vs the + operator
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Safari/605.1.15
Browser:
Safari 26
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
8 months ago
Test name
Executions per second
template literal
337797696.0 Ops/sec
array join
20176032.0 Ops/sec
string concat
32991010.0 Ops/sec
the + operator
320837216.0 Ops/sec
unallocated array join
18043746.0 Ops/sec
Script Preparation code:
var a = 'a'; var b = 'b'; var c = 'c'; var abc = [a,b,c];
Tests:
template literal
for (let n = 0; n < 1000; n++) { return `${a} ${b} ${c}`; }
array join
for (let n = 0; n < 1000; n++) { return abc.join(' '); }
string concat
for (let n = 0; n < 1000; n++) { return ''.concat(a, ' ', b, ' ', c); }
the + operator
for (let n = 0; n < 1000; n++) { return a + ' ' + b + ' ' + c; }
unallocated array join
for (let n = 0; n < 1000; n++) { return [a,b,c].join(' '); }