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正则

zheng 14 hours ago
parent
684cb929de
commit
9901e8f8d6
4 changed files with 84 additions and 0 deletions
Split View Show Diff Stats
  1. 39 0
      21.正则/5.字符类.html
  2. 29 0
      21.正则/6.分组.html
  3. 16 0
      21.正则/7.练习.html
  4. BIN
      21.正则/元字符.jpg

+ 39 - 0
21.正则/5.字符类.html
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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("ababab"));
 
+         console.log(reg.test("abc"));
 
+         console.log(reg.test("acbab"));
 
+         console.log(reg.test("acacacac"));
 
+         console.log(reg.test("ededfd"));
 
+
 
+        //  - 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 =/[^0-9]/;
 
+        console.log(reg5.test('adad'));
 
+
 
+        // . 匹配换行外的任意字符
 
+        const reg6 = /./;
 
+        console.log(reg6.test('adad'));
 
+        console.log(reg6.test('12123'));
 
+        console.log(reg6.test(' '));
 
+        console.log(reg6.test('.'));
 
+        console.log(reg6.test('\t'));
 
+
 
+    </script>
 
+    
+</body>
 
+</html>

+ 29 - 0
21.正则/6.分组.html
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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>
 
+        const reg = /(ab)(cc)/;
 
+        console.log(reg.test('ababaccb'));
 
+        console.log(reg.test('abab'));
 
+        console.log(reg.test('abccab'));
 
+        console.log(reg.test('ababaccb'));
 
+
 
+        const data = '2026-01-30';
 
+        const reg1 = /^(\d{4})-(\d{2})-(\d{2})$/;
 
+        console.log(reg1.test(data));
 
+        console.log(data.replace(reg1,'$2/$3/$1'));
 
+
 
+
 
+        const reg2 = /西游记|红楼梦/;
 
+        console.log(reg2.test("红楼梦"));
 
+        console.log(reg2.test("水浒传"));
 
+        // /^\d{15,17}$/
 
+        // https://regexper.com/ 网址
 
+    </script>
 
+</body>
 
+</html>

+ 16 - 0
21.正则/7.练习.html
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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>
 
+        // 1.手机号脱敏 13789430987 => 137****0987
 
+        // 2.密码匹配 （6-16字母、数字、下划线）
 
+        // 3.匹配16进制颜色 #ff0000 #0f0
 
+        // 4.匹配24小时时间 23:59 20:12 08:35 18:22
 
+    </script>
 
+</body>
 
+</html>

BIN
21.正则/元字符.jpg
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