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Run results for:
Array join vs concatenation vs interpolation
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0
Browser:
Firefox 149
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one month ago
Test name
Executions per second
Array join
1.2 Ops/sec
String Concatenation
1.9 Ops/sec
String Interpolation
1.8 Ops/sec
Script Preparation code:
var arr = []; for (var i = 0; i < 1000000; i++) { arr.push(i); }
Tests:
Array join
var obj = {}; for (var i = 0; i < arr.length; i++) { var key = ['a', i, 'b'].join('_'); obj[key] = obj[key] || i; }
String Concatenation
var obj = {}; for (var i = 0; i < arr.length; i++) { var key = 'a_' + i + '_b'; obj[key] = obj[key] || i; }
String Interpolation
var obj = {}; for (var i = 0; i < arr.length; i++) { var key = `a_${i}_b`; obj[key] = obj[key] || i; }