js将时间戳格式化为HH:ii:ss的格式

将时间戳格式化为 HH:ii:ss的格式

<html>
<head>
</head>
<body>
    <span id="time"></span>
    <script>
        var timestamp = Date.parse(new Date())/1000;
        var time_old = Date.parse(new Date())/1000;
        timeAdd()

        /**
         * @purpose    :    计时器，自动加一秒
         * @time    :    2018-01-23
         * @author    :    daicr
        */
        function timeAdd(){
            document.getElementById('time').innerHTML = time_format(timestamp-time_old);
            timestamp +=1;
            setTimeout("timeAdd()",1000);
        }

        /**
         * @purpose    :    将时间戳格式化为 HH:ii:ss的格式
         * @time    :    2018-01-23
         * @author    :    daicr
        */
        function time_format(sec){
            var time_str = '';
            var hour = '';
            var minute = '';
            var second = '';

            if(sec < 0){
                time_str = '00:00:00';
            }else if(sec < 3600){        // 一小时以内
                // 分钟
                minute = Math.floor(sec/60);
                if(minute < 10){
                    minute = '0'+minute;
                }

                //秒
                second = sec%60;
                if(second < 10){
                    second = '0'+second;
                }

                time_str = '00:'+minute+':'+second;
            }else{                     // 一小时以上
                // 小时
                hour = Math.floor(sec/3600);
                if(hour < 10){
                    hour = '0'+hour;
                }

                // 分钟
                minute = Math.floor((sec%3600)/60);
                if(minute < 10){
                    minute = '0'+minute;
                }

                //秒
                second = sec%60;
                if(second < 10){
                    second = '0'+second;
                }

                time_str = hour+':'+minute+':'+second;
            }
            return time_str;
        }
    </script>
</body>
</html>

本文为小作者工作中的总结，如有转载，请注明出处：http://www.cnblogs.com/chrdai/p/8336129.html