82 lines
2.6 KiB
JavaScript
82 lines
2.6 KiB
JavaScript
// +----------------------------------------------------------------+
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// | Array functions that are missing in IE 5.0 |
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// | Author: Cezary Tomczak [www.gosu.pl] |
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// | Free for any use as long as all copyright messages are intact. |
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// +----------------------------------------------------------------+
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// Removes the last element from an array and returns that element.
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if (!Array.prototype.pop) {
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Array.prototype.pop = function() {
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var last;
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if (this.length) {
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last = this[this.length - 1];
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this.length -= 1;
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}
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return last;
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};
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}
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// Adds one or more elements to the end of an array and returns the new length of the array.
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if (!Array.prototype.push) {
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Array.prototype.push = function() {
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for (var i = 0; i < arguments.length; ++i) {
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this[this.length] = arguments[i];
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}
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return this.length;
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};
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}
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// Removes the first element from an array and returns that element.
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if (!Array.prototype.shift) {
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Array.prototype.shift = function() {
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var first;
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if (this.length) {
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first = this[0];
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for (var i = 0; i < this.length - 1; ++i) {
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this[i] = this[i + 1];
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}
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this.length -= 1;
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}
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return first;
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};
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}
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// Adds one or more elements to the front of an array and returns the new length of the array.
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if (!Array.prototype.unshift) {
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Array.prototype.unshift = function() {
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if (arguments.length) {
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var i, len = arguments.length;
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for (i = this.length + len - 1; i >= len; --i) {
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this[i] = this[i - len];
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}
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for (i = 0; i < len; ++i) {
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this[i] = arguments[i];
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}
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}
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return this.length;
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};
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}
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// Adds and/or removes elements from an array.
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if (!Array.prototype.splice) {
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Array.prototype.splice = function(index, howMany) {
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var elements = [], removed = [], i;
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for (i = 2; i < arguments.length; ++i) {
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elements.push(arguments[i]);
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}
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for (i = index; (i < index + howMany) && (i < this.length); ++i) {
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removed.push(this[i]);
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}
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for (i = index + howMany; i < this.length; ++i) {
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this[i - howMany] = this[i];
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}
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this.length -= removed.length;
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for (i = this.length + elements.length - 1; i >= index + elements.length; --i) {
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this[i] = this[i - elements.length];
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}
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for (i = 0; i < elements.length; ++i) {
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this[index + i] = elements[i];
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}
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return removed;
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};
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} |