Created
September 7, 2015 03:55
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JavaScript - Once Function
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// http://davidwalsh.name/javascript-once | |
function once(fn, context) { | |
var result; | |
return function() { | |
if(fn) { | |
result = fn.apply(context || this, arguments); | |
fn = null; | |
} | |
return result; | |
}; | |
} | |
// Usage | |
var canOnlyFireOnce = once(function() { | |
console.log('Fired!'); | |
}); | |
canOnlyFireOnce(); // "Fired!" | |
canOnlyFireOnce(); // nada |
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