lovecoding
/
W250913


			
				
					
						
						
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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)(cd)/;
        console.log(reg.test("abcd"));
        const str = '2026-05-17';
        const reg1 = /^(\d{4})-(\d{2})-(\d{2})$/;
        // $1 $2 $3
        // 05/17/2026
        console.log(str.replace(reg1,'$2/$3/$1'))
        // /^[0-9A-HJ-NPQRTUWXY]{2}\d{6}[0-9A-HJ-NPQRTUWXY]{10}$/
        // 逻辑运算符：| 分支 或
        const reg2 = /a|b/;
        console.log(reg2.test("a"));
        console.log(reg2.test("ab"));
        console.log(reg2.test("b"));
        console.log(reg2.test("ac"));
        console.log(reg2.test("d"));
        console.log(reg2.test("fa"));
        // https://regexper.com/
    </script>
</body>
</html>