lovecoding
/
W250511


			
				
					
						
						
							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("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>