javascript 数组删除某个元素

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/** 删除数组指定下标的元素.*/Array.prototype.remove = function ( dx ) {if (isNaN(dx) || dx > this.length) {return false;}for (var i = 0, n = 0; i < this.length; i++) {if (this[i] != this[dx]) {this[n++] = this[i]}}this.length -= 1}/* * 在数组中获取指定值的元素索引 */Array.prototype.getArrayIndex = function ( value ) {var index = -1;for (var i = 0; i < this.length; i++) {if (this[i] == value) {index = i;break;}}return index;}