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- <!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("a"))
- // console.log(reg.test("ababab"))
- // console.log(reg.test("abc"))
- // console.log(reg.test("acbacb"))
- // console.log(reg.test("acacac"))
- // console.log(reg.test("dddfff"))
- // // - 连字符
- // const reg1 = /0-9/;
- // const reg2 = /a-z/;
- // const reg3 = /A-Z/;
- // const reg4 = /a-zA-Z0-9_/;
- // // ^ 取反
- // const reg5 = /\D/;
- // console.log(reg5.test('ab'));
- // . 除换行外的任意字符
- const reg6 = /./;
- console.log(reg6.test("aaa"));
- console.log(reg6.test("1234567890"));
- console.log(reg6.test(""));
- console.log(reg6.test("\n"));
- console.log(reg6.test("\r"));
- </script>
- </body>
- </html>
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