Created
June 14, 2015 05:29
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once.js
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| function once(fn, context) { | |
| var result; | |
| return function() { | |
| if(fn) { | |
| result = fn.apply(context || this, arguments); | |
| fn = null; | |
| } | |
| return result; | |
| }; | |
| } |
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| // Usage | |
| var canOnlyFireOnce = once(function() { | |
| console.log('Fired!'); | |
| }); | |
| canOnlyFireOnce(); // "Fired!" | |
| canOnlyFireOnce(); // nada | |
| //http://davidwalsh.name/essential-javascript-functions |
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