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February 2, 2017 16:25
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Debounce & throttle javascript function
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| function debounce(callback, delay){ | |
| var timer; | |
| return function(){ | |
| var args = arguments; | |
| var context = this; | |
| clearTimeout(timer); | |
| timer = setTimeout(function(){ | |
| callback.apply(context, args); | |
| }, delay) | |
| } | |
| } | |
| function throttle(callback, delay) { | |
| var last; | |
| var timer; | |
| return function () { | |
| var context = this; | |
| var now = +new Date(); | |
| var args = arguments; | |
| if (last && now < last + delay) { | |
| // le délai n'est pas écoulé on reset le timer | |
| clearTimeout(timer); | |
| timer = setTimeout(function () { | |
| last = now; | |
| callback.apply(context, args); | |
| }, delay); | |
| } else { | |
| last = now; | |
| callback.apply(context, args); | |
| } | |
| }; | |
| } |
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