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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("ababba"));
- // console.log(reg.test("abc"));
- // console.log(reg.test("acbab"));
- // console.log(reg.test("acacaca"));
- // console.log(reg.test("ddfffdf"));
- // 连字符 -
- // const reg1 = /0-9/;
- // console.log(reg1.test('121s'));
- // // 取反 ^
- // const reg2 = /[^a-z]/;
- // console.log(reg2.test('32'));
- // . 匹配换行外的任意字符
- const reg3 = /./;
- console.log(reg3.test("Aaaa"));
- console.log(reg3.test("1234578765432"));
- console.log(reg3.test("")); // false
- console.log(reg3.test("\n"));
- console.log(reg3.test("\r"));
- </script>
- </body>
- </html>
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