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Accurate Javascript setInterval replacement
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| function interval(duration, fn){ | |
| this.baseline = undefined | |
| this.run = function(){ | |
| if(this.baseline === undefined){ | |
| this.baseline = new Date().getTime() | |
| } | |
| fn() | |
| var end = new Date().getTime() | |
| this.baseline += duration | |
| var nextTick = duration - (end - this.baseline) | |
| if(nextTick<0){ | |
| nextTick = 0 | |
| } | |
| (function(i){ | |
| i.timer = setTimeout(function(){ | |
| i.run(end) | |
| }, nextTick) | |
| }(this)) | |
| } | |
| this.stop = function(){ | |
| clearTimeout(this.timer) | |
| } | |
| } | |
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Example of use:
var timer = new interval(50, function(){ console.log(new Date().getTime()) }) timer.run()