计时器延时问题

js计时器

1. var startTime = new Date().getTime();
2. var count = 0;
3. /*setInterval(function(){
4. var i = 0;
5. while(i++ < 100000000);
6. }, 0);*/
8. function fixed() {
9. count++;
10. var offset = new Date().getTime() - (startTime + count * 1000);
11. var nextTime = 1000 - offset;
12. if (nextTime < 0) nextTime = 0;
13. setTimeout(fixed, nextTime); //纠正延时
15. console.log(new Date().getTime() - (startTime + count * 1000));
16. }
18. setTimeout(fixed, 1000);