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    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <title></title>

    <script type="text/javascript">

        /*

                var str = "012345678901234567890123456789";

                var re = /123/;

                var globalre = /123/g;

                //非全局匹配

                var resultArray = re.exec(str);

                console.log(resultArray[0]);//输出123

                console.log(resultArray.index);//输出1

                console.log(globalre.lastIndex);//输出0

                var resultArray = re.exec(str);

                console.log(resultArray[0]);//输出123

                console.log(resultArray.index);//输出1

                console.log(globalre.lastIndex);//输出0

                //全局匹配

                var resultArray = globalre.exec(str);

                console.log(resultArray[0]);//输出123

                console.log(resultArray.index);//输出1

                console.log(globalre.lastIndex);//输出4

                var resultArray = globalre.exec(str);

                console.log(resultArray[0]);//输出123

                console.log(resultArray.index);//输出11

                console.log(globalre.lastIndex);//输出14

        */

        window.onload = function () {

            //Example one;

            var str1 = 'time 2015-10-8 11:21:23；time 1988-7-28 10:10:32；time 2013-1-19 12:25:45；time 2022-12-11 10:10:22；';

            var reg1 = /(\d{4})-(\d{1,2})-(\d{1,2})\s+(\d{1,2}):(\d{1,2}):(\d{1,2})/g;//\s表示空格 +：一个多个空格

            var arr = reg1.exec(str1);

            // console.log(arr);

            var result = allExec(reg1, str1);

            console.log(result);

            //Example two;

            var str2 = 'http://www.gurucv.com?cource=js&teacher=Cupid&typeCode=1';

            var result = urlToJson(str2);

            console.log(result);

            console.log(Math.abs(~2015));

            console.log(Math.ceil(011).toString(2));

        }

        //

        function allExec(reg, str) {

            if (!reg.global) {

                return reg.exec(str);

            }

            var a = [];//用来获取每次捕获的结果

            var result = null;

            while ((result = reg.exec(str)) != null) {

                a.push(result);//死循环

            }

            return a;

        }

        //

        function urlToJson(str) {

            var reg = /([^?=&]+)=([^=?&]+)/g;//排出？=& 等号左右两侧开头不能包括？=&

            //出现多次拿exec去匹配

            //var result = reg.exec(str);

            var result = null;

            var jsonLeft = "{", jsonRight = "}", jsonContent = "";

            while (result = reg.exec(str)) {

                for (var i = 1, len = result.length; i < len / 2; i = i + 2) {

                    jsonContent += '"' + result[i] + '":"' + result[i + 1] + '",';

                }

            }

            return jsonLeft + jsonContent + jsonRight;

        }

    </script>

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