<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<!-- Created by TopStyle Pro Trial Version - www.bradsoft.com -->
<title>page85删除替换插入</title>
</head>
<body onload="insertMessageafter()">
<p id="p1">Hello World</p>
</body>
</html>
<script>
function removeMessage(){
var op = document.getElementByIdx_x("p1");
//document.body.removeChild(op);
//op.parentNode返回父类节点
op.parentNode.removeChild(op);
}
function replaceMessage(){
var newop = document.createElement_x("p");
newop.appendChild(document.createTextNode("Hello Java"));
//alert(newop.innerHTML);
var oldop = document.getElementByIdx_x("p1");
//document.body.removeChild(op);
//op.parentNode返回父类节点
oldop.parentNode.replaceChild(newop,oldop);
//document.body.replaceChild(newop,oldop)
}
function insertMessagebefore(){
var newop = document.createElement_x("p");
newop.appendChild(document.createTextNode("Hello Java"));
var oldop = document.getElementByIdx_x("p1");
oldop.parentNode.insertBefore(newop,oldop);
}
function insertMessageafter(){
var newop = document.createElement_x("p");
newop.appendChild(document.createTextNode("Hello Java"));
var oldop = document.getElementByIdx_x("p1");
insertafter(newop,oldop);
}
function insertbefore(newnode,oldnode){
oldnode.parentNode.insertBefore(newnode,oldnode);
}
function insertafter(newnode,oldnode){
//判断oldnode后面还有没有同类别的标记
var nextnode = oldnode.nextSibling;
if(nextnode){ //如果没有则为null,则为false,有的话就为true
oldnode.parentNode.insertBefore(newnode,nextnode);
}else{
oldnode.parentNode.appendChild(newnode);
}
}
</script>
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