Die Beispiele in diesem Artikel beschreiben das JS-Klonen, Attribute, Arrays, Objekte und Funktionen. Teilen Sie es als Referenz mit allen. Die Details lauten wie folgt:
<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>
Das console.log hier ist sehr interessant, interessanter als die Warnung. Alert kann nicht alle Daten abrufen und muss einzeln angezeigt werden eins.
Die Array-Definition von js ist ebenfalls sehr interessant.
Weiteres Upgrade
<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>