| 123456789101112131415161718192021 |
- <!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 */
- /* 独一无二的 不和其他的进行冲突 */
-
- // var a = Symbol('me')
- let a = Symbol('school')
- let b = Symbol('school')
- console.log(a,b)
-
- </script>
- </body>
- </html>
|
