lovecoding
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VIP28


			
				
					
						
						
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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  undefined  null
    // var a = 123;
    // var b = '123';
    // var c = true;
    // var d;

    var a = 123
    b = a
    console.log(b)

    console.log(c)
    var c = '123'

    var k = 123
    console.log(k)
    k = '123'
    console.log(k)
    k = true
    console.log(k)
  </script>
</body>
</html>