Created
February 16, 2016 10:19
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A simple Click Rate Limiter / Debouncer
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <script src="//ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script> | |
| </head> | |
| <body> | |
| <ul id="list"></ul> | |
| <button id="thebutton">Try me</button> | |
| <script> | |
| $(document).on('ready', function () { | |
| $('#thebutton').on('touchstart click touchend', someFunction); | |
| }); | |
| function someFunction() { | |
| /* Click Rate Limiter start */ | |
| var actionIdentifier = 'savePressedId'; | |
| var noRateLimit = clickRateLimiter(actionIdentifier, 2500); | |
| if (!noRateLimit) return false; // function is quarntined - prevent it from executing | |
| /* Click Rate Limiter end */ | |
| /* do your business logic as usual */ | |
| $('#list').append('<li>' + new Date() + '</li>'); | |
| } | |
| /* Created by Anders Holm-Jensen, allora.dk - License: MIT */ | |
| var rateLimitArray = []; | |
| function clickRateLimiter(funcId, limit) { | |
| var go = true; | |
| var arrayId = -1; | |
| var now = Date.now(); | |
| var obj = { 'id': funcId, 'timestamp': now }; | |
| $(rateLimitArray).each(function (i, item) { | |
| if (item.id === funcId) { | |
| arrayId = i; | |
| var max = item.timestamp + limit; | |
| if (max - now > 0) { | |
| // halt it | |
| console.log(funcId + ' blocked by clickRateLimiter. (' + (max - now) + ' time left)'); | |
| go = false; | |
| } | |
| } | |
| }); | |
| if (go) { | |
| // if not returned yet go ahead | |
| if (arrayId === -1) { | |
| rateLimitArray.push(obj); | |
| } else { | |
| rateLimitArray.splice(arrayId, 1, obj); // replace in CRL array | |
| } | |
| // run function | |
| console.log(funcId + ' executed with clickRateLimiter'); | |
| } | |
| return go; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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Looke at me spreading knowledge... like a boss. 😄