本文实例讲述了JS克隆，属性，数组，对象，函数。分享给大家供大家参考，具体如下：
<script type="text/javascript"> /* 克隆原型得到对象 */ function clone(object) { function F() {} F.prototype = object; return new F; } var Person = { name: 'default name', getName: function() { return this.name; } }; var reader = clone(Person); console.log(reader.getName()); // This will output 'default name'. reader.name = 'John Smith'; console.log(reader.getName()); // This will now output 'John Smith'. /* Author Prototype Object. */ var Author = clone(Person); Author.books = []; // 书数组 Author.getBooks = function() { return this.books; } var author = []; author[0] = clone(Author); author[0].name = 'Dustin Diaz'; author[0].books = ['JavaScript Design Patterns']; author[1] = clone(Author); author[1].name = 'Ross Harmes'; author[1].books = ['JavaScript Design Patterns','PHP','Mysql']; console.log(author[0].getName()); console.log(author[0].getBooks()); console.log(author[1].getName()); console.log(author[1].getBooks()); </script>
结果
这里的console.log很有意思，比alert有意思，alert不能获取全部数据，需要一个个弹出。
js的数组定义也很有意思。
进一步升级
<script type="text/javascript"> /* 克隆原型得到对象 */ function clone(object) { function F() {} F.prototype = object; return new F; } var Person = { name: 'default name', getName: function() { return this.name; } }; var Author = clone(Person); Author.books = []; // 书数组 Author.getBooks = function() { return this.books; } var authorClone = clone(Author); console.log(authorClone.name); // string 'default name'. authorClone.name = 'new name'; // 重新赋值 console.log(authorClone.name); // Now linked to the primative authorClone.name, which // is the string 'new name'. console.log(Author.getName()); // 没有改变，任然是 'default name' console.log(Author.getBooks()); // 空的 authorClone.books.push('new book'); // Author被改了 authorClone.books.push('new new book'); // Author被改了 console.log(Author.getBooks()); // array 'new book' console.log(authorClone.getBooks()); // array 'new book' authorClone.books = []; // 定义了属于自己的books数组 authorClone.books.push('new book2'); // We are now modifying that new array. authorClone.books.push('new book3'); authorClone.books.push('new book4'); console.log(authorClone.getBooks()); console.log(Author.getBooks()); var CompoundObject = { string1: 'default value', childObject: { bool: true, num: 10 }, getChild: function() { // 返回对象Object return this.childObject; } } var compoundObjectClone = clone(CompoundObject); compoundObjectClone.childObject.num = 5; // 不好的方式 compoundObjectClone.childObject = { // 好一点的方式 bool: true, num: 5 }; console.log(compoundObjectClone.getChild()); </script>
结果：
希望本文所述对大家JavaScript程序设计有所帮助。
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