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                企業??AI智能體構建引擎,智能編排和調試,一鍵部署,支持知識庫和私有化部署方案 廣告
                ### 原型:Prototype - 原型是什么 - 原型是 `class`,修改它可以影響一類元素 - 在已有對象中加入自己的屬性、方法 - 為所有 `Array` 添加 `Sum` 方法:`Array.prototype.sum = function () {} ` - 給對象添加方法,類似于行間樣式 - **給原型添加方法,類似于 `class`** - 原型的小缺陷 - 無法限制覆蓋 - 類和對象的區別 - 類:生產對象的模板 `Array` - `var arr = new Array()` - 對象:產品 `arr` - 總結:**用構造函數加屬性,用原型加方法,叫做混合方式構造對象** - 代碼: ```HTML <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>面對對象基礎</title> <style> </style> <script> // 工廠方式 function CreatePerson(name, qq) { var obj = new Object(); obj.name = name; obj.qq = qq; obj.showName = function () { console.log('名字:', this.name); } obj.showQQ = function () { console.log('QQ:', this.qq) } return obj; } var person = CreatePerson('zhangsan','212345678'); person.showName(); person.showQQ(); // 使用原型 function CreatePerson2(name, qq) { this.name = name; this.qq = qq; } CreatePerson2.prototype.showName2 = function () { console.log('名字:', this.name); } CreatePerson2.prototype.showQQ2 = function () { console.log('QQ:', this.qq) } var people = new CreatePerson2('asdf','535'); people.showName2(); people.showQQ2(); </script> </head> <body> </body> </html> ```
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