请问为什么我这样写的为什么第一张可以显示，其它的都显示不了？
在控制台看到其它的图片所在的li高度都为0。同时可以在控制台看到轮播的时候的确li的display会改变。图片路径什么的都是没有问题的
<!DOCTYPE html><html lang="en"><head>
<meta charset="UTF-8">
<title> javascript焦点图轮播代码实例详解 </title>
<style>
*{ margin: 0; padding: 0; list-style: none; }
.wrap{ height: 170px; width: 490px; position: relative; margin: 100px auto; }
ul li img{ width: 490px; height: 170px; }
.wrap ol{ position: absolute; right: 5px; bottom: 10px; }
.wrap ol li{ height: 20px; width:20px; background-color: #ccc; border: solid #666 1px; margin-left: 5px; color: #000; float: left; line-height: 20px; text-align: center; cursor: pointer;
}
.wrap ol .on{ background-color: #e97305; color: #fff; }
.clearfix:before,.clearfix:after{ content: ""; display: table; }
.clearfix:after{ clear: both; }
</style></head><body>
<div class="wrap" id="wrap">
<ul id="pic">
<li><img src="img/Lone.jpg" alt="Lone"></li>
<li><img src="img/Ltwo.jpg" alt="Ltwo" style="display:none;"></li>
<li><img src="img/Lthree.jpg" alt="Lthree" style="display:none;"></li>
<li><img src="img/Lfour.jpg" alt="Lfour" style="display:none;"></li>
<li><img src="img/Lfive.jpg" alt="Lfive" style="display:none;"></li>
</ul>
<ol id="list" class="clearfix">
<li class="on">1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ol>
</div>
<script>
window.onload=function(){ var pic=document.getElementById('pic').getElementsByTagName('li'); var list=document.getElementById('list').getElementsByTagName('li'); var index=0; var timer=null; for (var x = 0; x < pic.length; x++) {
list[x].id=x;
pic[x].id=x;
list[x].onmouseover=function(){
clearInterval(timer);
changeImg(this.id);
}
list[x].onmouseout=function(){
index=this.id;
autoChange(index);
} document.getElementById('pic').onmouseout=function(){
autoChange(index);
} document.getElementById('pic').onmouseover=function(){
clearInterval(timer);
}
}
autoChange(index); function changeImg(id){ for (var j = 0; j < list.length; j++) {
list[j].className="";
pic[j].style.display="none";
}
list[id].className="on";
pic[id].style.display="block";
} function autoChange(index){
timer=setInterval(function(){
index++; if(index>=pic.length){
index=0;
};
changeImg(index);
},1000)
}
} </script></body></html>
Joeeeee浏览 1345回答 1
1回答
-
OlderSkee
var pic = document.getElementById('pic').getElementsByTagName('img');你是要查li里面的img让它显示，而不是li本身一个小错误啦
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