发布于 2017-01-18 11:34:06 | 166 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Javascript教程，程序狗速度看过来！
JavaScript客户端脚本语言
Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>hover test</title>
<style type="text/css">
ul{
background-color:#ff00ff;
display:block;
}
.toc li{
position:relative; width:10em;
background-color:#00ff00;
display:block;
}
li a {
/*display:block;*/ /*若以块的模式显示，则会占满整个父元素空间*/
background-color:#0000ff;
} /*必须让a成为块级元素*/
li a i{
display:none;
}
li a:hover{
text-align:left;
}/*这里添加的代码只是为了让IE6显示，没有特殊功能，除text-decoration，color，z-index外都可以写*/
.toc li a:hover i{
display:block;
width:6em;
position:absolute;
top:0;
left:100%; /* 这里100%指相对于元素li的宽度*/
margin:-1em 0 0 0em;
padding:1em;
background:#cde;
border:1px solid red;
text-align:left;
z-index:10000;
}
</style>
</head>
<body>
<iframe id="iframe1" src="" width="400" height="300"></iframe>
html代码
<ul class="toc" id="toc">
<li><a href="1.html">Chapter 1<i>In which a dragon is seen</i></a></li>
<li><a href="2.html">Chapter 1<i>In which a knight is summoned</i></a></li>
<li><a href="3.html">Chapter 1<i>In which a proncess is disappointed</i></a></li>
<li><a href="4.html">Chapter 1<i>In which a dragon is seen</i></a></li>
<li><a href="5.html">Chapter 1<i>In which a dragon is seen</i></a></li>
<li><a href="6.html">Chapter 1<i>In which a dragon is seen</i></a></li>
<li><a href="7.html">Chapter 1<i>In which a dragon is seen</i></a></li>
</ul>
<script language="javascript">
function getElementAbsPos(e) {
var t = e.offsetTop;
var l = e.offsetLeft;
while(e = e.offsetParent) {
t += e.offsetTop;
l += e.offsetLeft;
}
return {left:l,top:t};
}
function getPosition(obj){
var left = 0;
var top = 0;
while(obj != document.body){
left = obj.offsetLeft;
top = obj.offsetTop;
obj = obj.offsetParent;
}
return left;
}
var lis = document.getElementsByTagName('li');
var iwin = document.getElementById('iframe1').contentWindow;
var doc = iwin.document;
for(var i=0;i<lis.length;i++){
lis[i].onmouseover = function(){
var obji = this.childNodes[0].childNodes[1];
doc.writeln('<br>'+ obji.innerText + ',' + getElementAbsPos(document.getElementById('toc')).left);
doc.writeln('<br>'+ obji.offsetLeft + ',' + getElementAbsPos(obji).left + ',' + obji.offsetWidth+ ',' + obji.style.left);
doc.writeln('<br><b>'+ doc.body.scrollHeight + '</b>')
iwin.scroll(0,doc.body.scrollHeight);
//iwin.scrollTo(10000); //无效
}
}
</script>
</body>
</html>