js怎么截取两个中括号中间的值

js怎么截取两个中括号中间的值，微秒有时两位有时三位,正则表达式也可以

[00:02.02]，[00:02.342]，[00:03.2]，[00:03.42]，[00:04.02]，[00:05.342]

 

<body>
    <p id="demo"></p>
    <script>

        function getStr(str) {
            if (str == "" || str == null || str == undefined) { // "",null,undefined
                return "";
            }

            var subArr = str.split('，');
            var str = "";
            var strTemp = "";
            for (var num = 0; num < subArr.length; num++) {
                console.log(subArr[num]);
                strTemp = subArr[num].substr(1, subArr[num].length);
                strTemp = strTemp.substr(0, subArr[num].length - 2)
                str += strTemp+",";
                //console.log(strTemp);
            }
            return str;
        }

        document.getElementById("demo").innerHTML = getStr("[00:02.02]，[00:02.342]，[00:03.2]，[00:03.42]，[00:04.02]，[00:05.342]");
    </script>
</body>

 

 

 

posted @ 2020-10-07 09:05  DBing  阅读(3583)  评论(0)  编辑  收藏  举报