问题

线上遇到bug，写了定时器，展示打卡时间读秒，结果定时器越跑延迟越大，用setTimeout fix了。记录下

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//timeRange为定时器时间间隔
var startTime = new Date().getTime();
var count = 0;
function handle () {
     count++;
     var offset = new Date().getTime() - (startTime + count * timeRange);
     var nextTime = timeRange - offset;
     if (nextTime < 0) nextTime = 0;
     timer = setTimeout(handle, nextTime);
     totalDiatane += distanceBlock
     document.getElementById('distance').innerText = totalDiatane.toFixed(2)
}
timer = setTimeout(handle, timeRange);