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字符串和正则相关的方法.html

<!DOCTYPE html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>

</body>
<script>
    var str = "1a2b3c3d5f";
    var result = str.split("c");
    console.log(result);  // ['1a2b3', '3d5f']

    var result1 = str.split(/[A-z]/);
    console.log(result1);  // ['1', '2', '3', '3', '5', '']

    var str1 = "how old are you?";
    var result2 = str1.search("old");
    console.log(result2);  // 4

    var str3 = "hello abc aec afc";
    var result3 = str3.search(/a[bdf]c/);
    console.log(result3);  // 6

    // 提取出所有的字母
    var str4 = "1a2b3c3d5f7A8B9C";
    var result4 = str4.match(/[A-z]/g);
    console.log(result4);  // ['a', 'b', 'c', 'd', 'f', 'A', 'B', 'C']

    var str5 = "apple and banana";
    var result5 = str5.replace(/a/gi,"@_@");
    console.log(result5);  // @_@pple @_@nd b@_@n@_@n@_@
</script>
</html>