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並前往https://coderwall.com/p/kvzbpa/don-t-use-array-foreach-use-for-instead

Don't use Array.forEach, use for() instead Example - Coderwall

#javascript. Array.ForEach is about 95% slower than for() in for each for Arrays in JavaScript. So, don't use: arr.forEach(function (item) { someFn(item); }).

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