首頁 > 開發者 > JavaScript
這篇文章主要介紹了javascript中interval與setTimeOut的區別,需要的朋友可以參考下
setTimeout(code,millisec) //- 在指定時間後執行代碼 code必須； millisec必須； clearTimeout(setTimeoutId) //- 取消 setTimeout() setInterval(code,millisec)；//指定間隔毫秒內迴圈執行代碼 code必須； millisec必須； clearInterval(intervalId); 用setTimeout(code,millisec)可以實現setInterval效果，只需要嵌套調用方法即可； 下面是一個倒計時頁面 代碼如下:<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>無標題文檔</title> <script type="text/javascript"> var c=6; var t; function timedCount() { var time = document.getElementById('txt').value; if( time>0){ document.getElementById('txt').value=c; c=c-1; t=setTimeout("timedCount()",1000); } else{ clearTimeout(t); } } </script> </head> <body> <form> <input type="button" value="開始計時！" onClick="timedCount()"> <input type="text" id="txt" value="6"> </form> </body> </html>Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
