lovecoding
/
web250825


			
				
					
						
						
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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    <script>
        // 1.手机号脱敏 13789430987 => 137****0987
        const str = '13789430987';
        const reg = /^(1\d{2})\d{4}(\d{4})$/;
        console.log(str.replace(reg,'$1****$2'));
        // 2.密码匹配 （6-16字母、数字、下划线）
        const str1 = 'hello_123456';
        const reg1 = /^\w{6,16}$/;
        // 3.匹配16进制颜色 #ff0000 #0f0
        const str2 = '#ff0000';
        const str3 = '#0f0';
        const reg3 = /^#([a-fA-f0-9]{6})|#([a-fA-f0-9]{3})$/
        console.log(reg3.test(str2));
        console.log(reg3.test(str3));
        // 4.匹配24小时时间 23:59 20:12 08:35 18:22
        const reg4 = /^([0-1][0-9])|([2][0-3]):[0-5][0-9]$/;
        console.log(reg4.test("23:59"));
        console.log(reg4.test("20:12"));
        console.log(reg4.test("08:35"));
        console.log(reg4.test("18:22"));
    </script>
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