JS生成UUID的方法实例

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<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>用JS生成UUID的方法实例</title>    <script src="jquery.v2.2.2.min.js"></script>    <script>        var id = getUuid();        $(document).ready(function() {            $("p").click(function() {                alert(id);            });        });        function getUuid() {            var len = 32;//32长度            var radix = 16;//16进制            var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split('');            var uuid = [], i;            radix = radix || chars.length;            if(len) {                for(i = 0; i < len; i++)uuid[i] = chars[0 | Math.random() * radix];            } else {                var r;                uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-';                uuid[14] = '4';                for(i = 0; i < 36; i++) {                    if(!uuid[i]) {                        r = 0 | Math.random() * 16;                        uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r];                    }                }            }            return uuid.join('');        }    </script></head><body><p>点我，生成UUID。</p></body></html>

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