var num=0;? function startCount() {??? document.getElementById('count').value=num;??? num=num+1;??? setTimeout("startCount()",1000);? }?var num=0;? function startCount() {??? document.getElementById('count').value=num;??? num=num+1;??? setInterval("startCount()",1000);? }
下面兩段代碼的區(qū)別,是如何循環(huán)的?
愛小LV3418421
2016-10-30 15:46:52