求大神幫忙,為毛我的沒有反應
<!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=utf-8" />
<title>無標題文檔</title>
<style>
*{margin:0;
? padding:0;}
ul,li{list-style:none;}
ul li{width:200px;
?? height:100px;
?? background:yellow;
?? margin-bottom:20px;
?}
</style>
<script>
window.onload=function(){
?var oli=document.getElementsByTagName('li');
?for(var i=0;i=oli.length;i++){
??oli[i].onmouseover=function(){
???startMove(this,400);
???};
??oli[i].onmouseout=function(){
???startMove(this,200);
???};
??}
?}
var timer=null;
function startMove(obj,itarget){
?document.write("hshs");
??clearInterval(timer);
??timer=setInterval(function(){
???var speed=(itarget-obj.offsetWidth)/8;
???speed=speed>0?Math.ceil(speed):Math.floor(speed);
???if(obj.offsetWidth==itarget){
????clearInterval(timer);
????}else{
?????obj.style.width=obj.offsetWidth+speed+'px';
?????}
???},30)
??
??
??}
</script>
</head>
<body>
<ul>
?<li></li>
??? <li></li>
??? <li></li>
</ul>
</body>
</html>
2015-07-26
<!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=utf-8"?/> <title>無標題文檔</title> <style> *{margin:0; ??padding:0;} ul,li{list-style:none;} ul?li{width:200px; ???height:100px; ???background:yellow; ???margin-bottom:20px; ?} </style> <script> window.onload=function(){ ?var?oli=document.getElementsByTagName('li'); ?for(var?i=0;i<oli.length;i++){ ??oli[i].timer=null;//給每一個li都設置一個定時器,有點添加屬性的意思 ??oli[i].onmouseover=function(){ ???startMove(this,400); ???}; ??oli[i].onmouseout=function(){ ???startMove(this,200); ???}; ??} ?} //var?timer=null; function?startMove(obj,itarget){ ??//document.write("hshs"); ??clearInterval(obj.timer);//防止定時器重復觸發 ??obj.timer=setInterval(function(){ ??var?speed=(itarget-obj.offsetWidth)/8; ??speed=speed>0?Math.ceil(speed):Math.floor(speed); ??if(obj.offsetWidth==itarget){ ????clearInterval(obj.timer);//這里也需要改為obj.timer ????}else{ ?????obj.style.width=obj.offsetWidth+speed+'px'; ?????} ???},30) ?? ?? ??} </script> </head> <body> <ul> ????<li></li> ????<li></li> ????<li></li> </ul> </body> </html>你看我給你注釋的地方,你的都有問題,我已經幫你改過來了~~~~~~~~~(*^__^*) 嘻嘻……
2015-08-05
沒有動的原因是因為你的for循環條件有問題
2015-07-26
你的定時器只有一個是公用的,沒有給每一個li都設置~~~望采納~