js settimeout定时 for循环问题 闭包先做个笔记 留待研究
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript" src="jquery.1.7.2.min.js" ></script>
</head>
<body>
<div>0</div>
<script>
//1
/*
for(var i=0;i<5;i++){
setTimeout(function(){
alert(i);
},i*100);
}
*/
//2
/*
var createFunction=function(i){
return function(){
alert(i);
}
}
for(var i=0;i<5;i++){
setTimeout(createFunction(i),i*100);
}
*/
$(function(){
/*
for(var i=0;i<5;i++){
setTimeout(alert(i),i*1000)
}
*/
var t=function(i){
return function(){
$(‘div‘).html(i)
}
}
for(var i=0;i<5;i++){
setTimeout(t(i),i*1000)
}
})
//3
</script>
</body>
</html>本文出自 “甲午笔记” 博客，请务必保留此出处http://jiawu.blog.51cto.com/9349234/1567653
原文：http://jiawu.blog.51cto.com/9349234/1567653