extend 的使用说穿了很简单,无非2类。
实现: $.extend(对象A,对象B);
就是把对象B中的内容复制进对象A中,JAVAZ中Struts框架中的BeanUtils
$.extend(“新对象”,对象B);就是类似于JAVA和C#中的new 好了这些都不支持对象的对象的互换。
至于使用二个以上的参数都是以此类推的方式。
现在我提供一个支持对象的对象,包括对象的集合中的对象的复制方法,这样可以支持复杂对象的复制。
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JQuery.fn.extend(
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Extend: function(json, jsonCol) {
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for (var name in jsonCol) {
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if (typeof (jsonCol) == 'object' && json[name]) {
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if (this.IsArray(jsonCol[name])) {
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for (var i = 0; i < jsonCol[name].length; i++) {
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if (!json[name][i]) {
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json[name].push({});
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}
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this.Extend(json[name][i], jsonCol[name][i]);
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}
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} else {
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this.Extend(json[name], jsonCol[name]);
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}
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} else {
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$.extend(json, jsonCol);
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}
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}
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return json;
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},
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IsArray: function(test) {
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if (typeof test == 'object' && typeof test.sort == 'function' && typeof test.length == 'number') {
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return true;
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}
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else {
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return false;
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}
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}
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);
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看了某位仁兄的文章后,知道JQ自带这样的功能呵呵,就是$.extend(true,对象A,对象B)