<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>CSS-DOM</title>
<script src="addLoadEvent.js"></script>
<link rel="stylesheet" type="text/css" href="9.css" >
<script src="9.js"></script>
</head>
<body>
<!-- <p id="example">
An example of a paragraph
</p>
-->
<h2>Hold the front page</h2>
<p> This first paragraph leads you in;</p>
<p> This first paragraph leads you in;</p>
<p> This first paragraph leads you in;</p>
<h2>Extra! Extra!</h2>
<p> Further developements are unfolding</p>
<p> Further developements are unfolding</p>
<p> Further developements are unfolding</p>
</body>
</html>
function styleHeadersSiblings(){
if(!document.getElementsByTagName) return false;
var headers = document.getElementsByTagName("h2");
for(var i = 0;i < headers.length; i++){
var elem = getNextElement(headers[i].nextSibling);
elem.style.color = "red";
elem.style.fontSize = "1.2em";
}
}
//下一个元素节点通用函数
function getNextElement(node){
if(node.nodeType == 1){
return node;
}
//元素下一个节点，继续执行本次函数，循环，一直到找到下一个元素节点为止，则退出本次循环
if(node.nextSibling){
return getNextElement(node.nextSibling);
}
return null;
}
window.onload = styleHeadersSiblings;
