21 lines
672 B
JavaScript
21 lines
672 B
JavaScript
if (!Function.prototype.bind) {
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Function.prototype.bind = function (oThis) {
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if (typeof this !== "function") {
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// closest thing possible to the ECMAScript 5 internal IsCallable function
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throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable")
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}
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var aArgs = Array.prototype.slice.call(arguments, 1)
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var fToBind = this
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var fNOP = function () {}
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var fBound = function () {
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return fToBind.apply(this instanceof fNOP && oThis ? this : oThis, aArgs.concat(Array.prototype.slice.call(arguments)))
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}
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fNOP.prototype = this.prototype
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fBound.prototype = new fNOP()
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return fBound
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}
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}
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