lovecoding
/
VIP32


			
				
					
						
						
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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)b/;
        console.log(reg.test('babb'));
        console.log(reg.test('baabb'));
        // 分组捕获 $1 $2 $3
        const data = '2024-04-17';
        const reg1 = /^(\d{4})-(\d{2})-(\d{2})$/
        // const reg1 = /^[0-9]{4}-[0-9]{2}-[0-9]{2}$/
        console.log(reg1.test(data));
        // 04/17/2024
        console.log(data.replace(reg1,'$2~$3~$1'))
        // 分支结构
        var str1 = '西游记';
        var str2 = '红楼梦';
        var str3 = '三国演义';
        var str4 = '水浒传';
        var reg2 = /西游记|红楼梦/;
        console.log(reg2.test(str1));
        console.log(reg2.test(str2));
        console.log(reg2.test(str3));
        console.log(reg2.test(str4));
    </script>
</body>
</html>