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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>
- // 分组
- // const reg = /(ab)+/
- // console.log(reg.test('ab'))
- // console.log(reg.test('abab'))
- // console.log(reg.test('aabbab'))
- // 分组捕获
- // const reg = /^(\d{4})-(\d{2})-(\d{2})$/
- // const data = '2023-12-13';
- // // console.log(reg.test(data))
- // // 12/13/2023
- // console.log(data.replace(reg,'$2-$3-$1'))
- // 分支结构
- const reg = /西游记|红楼梦/
- const str1 = '西游记'
- const str2 = '水浒传'
- const str3 = '红楼梦'
- const str4 = '三国演义'
- console.log(reg.test(str1))
- console.log(reg.test(str2))
- console.log(reg.test(str3))
- console.log(reg.test(str4))
- </script>
- </body>
- </html>
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