lovecoding
/
w1020


			
				
					
						
						
							12345678910111213141516171819202122232425262728293031323334353637383940
							<!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)(cd)/;
        console.log(reg.test("abababacd"));
        console.log(reg.test("abab"));
        console.log(reg.test("abecd"));
        // 分组捕获
        const data = '2025-08-19';
        const reg1 = /^(\d{4})-(\d{2})-(\d{2})$/;
        console.log(reg1.test(data))
        console.log(data.replace(reg1,'$2/$3/$1'))

        // 分支结构
        const a1 = '西游记';
        const a2 = '水浒传';
        const a3 = '红楼梦';
        const a4 = '三国演义';

        const reg2 = /西游记|红楼梦/;
        console.log(reg2.test(a1));
        console.log(reg2.test(a2));
        console.log(reg2.test(a3));
        console.log(reg2.test(a4));

        /**
         * 1.安装插件any-rule
         * 2.https://regexper.com/
         * 可视化表达式
         */
    </script>
</body>
</html>