| 123456789101112131415161718192021222324252627282930313233343536373839 |
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <script>
- // 任意匹配 []
- // const reg = /[abc]/;
- // console.log(reg.test("ababab"));
- // console.log(reg.test("abc"));
- // console.log(reg.test("acbcba"));
- // console.log(reg.test("acaacac"));
- // console.log(reg.test("dcdhjhfgjk"));
- // 连字符 -
- // const reg1 = /[0-9]/
- // const reg2 = /[a-f]/
- // 取反 ^
- // const reg3 = /[^a-z]/;
- // console.log(reg3.test("acaacac"));
- // console.log(reg3.test("uiuiui"));
- // console.log(reg3.test("ba8ba"));
- // console.log(reg3.test("as"));
- // . 除换行以外的任意字符
- const reg4 = /./;
- console.log(reg4.test('aaa'))
- console.log(reg4.test('123456789'))
- console.log(reg4.test(''));//false
- console.log(reg4.test('\n'))
- console.log(reg4.test('\r'))
- </script>
- </body>
- </html>
|
