lovecoding
/
W260426


			
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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>
        // [] 任意匹配
        // const reg = /[abc]/;
        // console.log(reg.test("ababab"))
        // console.log(reg.test("abc"))
        // console.log(reg.test("acacac"))
        // console.log(reg.test("acbbca"))
        // console.log(reg.test("dds"))

        // - 连字符
        // const reg1 = /0-9/;
        // const reg2 = /a-z/;
        // const reg3 = /A-Z/;
        // const reg4 = /a-zA-Z0-9_/;


        /**
         * 
         * \w => /a-zA-Z0-9_/
         * \d => /0-9/
         * \W => /[^a-zA-Z0-9_]/
         * \D => /[^0-9]/
         */

        // 取反
        // const reg = /\D/;
        // console.log(reg.test('212'))

        // . 匹配换行外的任意字符
        const reg = /./;
        console.log(reg.test("aaa"))
        console.log(reg.test("1234567897654"))
        console.log(reg.test("")) // false
        console.log(reg.test("\n"))
        console.log(reg.test("\r"))
        console.log(reg.test("\f"))
    </script>
</body>

</html>