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98 lines
1.7 KiB
Markdown
98 lines
1.7 KiB
Markdown
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## 创建对象的几种方式
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### 通过Object
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```html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>01_Object构造函数模式</title>
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</head>
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<body>
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<!--
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方式一: Object构造函数模式
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* 套路: 先创建空Object对象, 再动态添加属性/方法
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* 适用场景: 起始时不确定对象内部数据
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* 问题: 语句太多
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-->
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<script type="text/javascript">
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/*
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一个人: name:"Tom", age: 12
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*/
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// 先创建空Object对象
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var p = new Object()
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p = {} //此时内部数据是不确定的
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// 再动态添加属性/方法
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p.name = 'Tom'
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p.age = 12
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p.setName = function (name) {
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this.name = name
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}
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//测试
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console.log(p.name, p.age)
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p.setName('Bob')
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console.log(p.name, p.age)
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</script>
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</body>
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</html>
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```
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### 方式二：对象字面量
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```html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>02_对象字面量</title>
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</head>
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<body>
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<!--
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方式二: 对象字面量模式
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* 套路: 使用{}创建对象, 同时指定属性/方法
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* 适用场景: 起始时对象内部数据是确定的
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* 问题: 如果创建多个对象, 有重复代码
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-->
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<script type="text/javascript">
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var p = {
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name: 'Tom',
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age: 12,
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setName: function (name) {
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this.name = name
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}
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}
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//测试
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console.log(p.name, p.age)
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p.setName('JACK')
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console.log(p.name, p.age)
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var p2 = { //如果创建多个对象代码很重复
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name: 'Bob',
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age: 13,
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setName: function (name) {
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this.name = name
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}
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}
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</script>
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</body>
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</html>
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```
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### 方式三：
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