lovecoding
/
VIP22


			
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							<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    // var person = {
    //   name: 'zs',
    //   age: 18
    // }
    // console.log(person.age)


    var computer = new Object()
    //对象.属性名 = 属性值
    computer.cpu = 'i9-12'
    computer.xianka = '4090'
    computer.neicun = 'sanixng'
    console.log(computer)


    var person = new Array()
    person[0] = 18
    person[1] = 'zs'
    console.log(person)


    console.log(typeof person)  //数组  还是对象   数据类型都为object
    console.log(typeof computer)


    var x = new String()  //把x声明为string对象
    var y = new Number()  //把y声明为number对象
    var z = new Boolean() //把z声明为boolean对象

    /* 尽量避免字符串、数值、逻辑对象  他们会增加代码的复杂性 并且降低执行速度 */
  </script>
</body>
</html>