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>
    /* 
    基本数据类型:  number string boolean null undefined
    引用数据类型:  object
    */

    var a = 123;
    var b = a;
    a = 111;
    console.log(a,b)


    var c = {
      name:'zs',
      age: 18
    }
    var d = c
    c.name = 'lisi'
    console.log(c,d)


    var e = [0,1,2,3,4]
    var f = e
    e[0] = 99
    console.log(e,f)
  </script>
</body>
</html>