php中结合Ajax的问题
删除页:del.php
<!--
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--><html>
<head>
<title>Information</title>
<script type="text/javascript">
var xmlHttp ;
function createXMLHttpRequest(){
if(window.ActiveXObject){
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP") ;
}else if(window.XMLHttpRequest){
xmlHttp=new XMLHttpRequest() ;
}
}
function show(){
createXMLHttpRequest() ;
var url="delsend.php" ;
xmlHttp.onreadystatechange=callback ;
xmlHttp.open("GET" , url , true) ;
xmlHttp.send(null) ;
}
function callback(){
if(xmlHttp.readyState==4){
if(xmlHttp.status==200){
chk() ;
}
}
}
function chk(){
var xmlDoc=xmlHttp.responseXML ;
var yan=xmlDoc.getElementsByTagName("content") ;
var ta="<table border='1' align='center'><th>用户编号</th><th>用户</th><th>聊天内容</th><th>聊天时间</th><th>操作</th>" ;
for(var i=0 ; i<yan.length ; i++){
var y=yan[i] ;
ta+="<tr><td>"+y.childNodes[0].firstChild.data+"</td>" ;
ta+="<td>"+y.childNodes[1].firstChild.data+"</td>" ;
ta+="<td>"+y.childNodes[2].firstChild.data+"</td>" ;
ta+="<td>"+y.childNodes[3].firstChild.data+"</td>" ;
ta+="<td><span id="+y.childNodes[4].firstChild.data+" onclick='start(this)'>删除</span></td></tr>" ;
}
ta +="</table>" ;
document.getElementById("del").innerHTML=ta ;
//alert(yan.length) ;
}
function start(ele){
var id=ele.id ;
createXMLHttpRequest() ;
var urldel="startsend.php?key="+escape(id) ;
xmlHttp.onreadystatechange=back ;
xmlHttp.open("GET" , urldel , true) ;
xmlHttp.send(null) ;
}
function back(){
if(xmlHttp.readyState==4){
if(xmlHttp.status==200){
var str=xmlHttp.responseText ;
if(str=="1"){
alert("该项已被删除,1秒之后显示新的信息") ;
setTimeout("show()" , 1000) ;
}
}
}
}
</script>
</head>
<body onLoad="show()">
<?php
error_reporting(E_ALL & ~E_NOTICE);
?>
<div align="center">
<h2>删除信息</h2>
<div id="del"></div>
</div>
</body>
</html>
<!--
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--><?php
header("Content-Type:text/xml") ;
header("cache-control:no-cache , must-revalidate") ;
error_reporting(E_ALL & ~E_NOTICE);
$xml="<?xml version='1.0' encoding='gb2312'?>" ;
$xml=$xml."<contents>" ;
include_once("conn.php") ;
$result=mysql_query("select * from chatcontent") ;
while($rs=mysql_fetch_object($result)){
$content.="<content><userid>".$rs->user_id."</userid><name>".$rs->name."</name><content1>".$rs->content."</content1><date>".$rs->showdate."</date><time>".$rs->id."</time></content>" ;
}
$xml=$xml.$content."</contents>" ;
echo $xml ;
mysql_close() ;
?>
<!--
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--><?php error_reporting(E_ALL & ~E_NOTICE);
$id=$_GET["key"] ;
include_once("conn.php") ;
$result=mysql_query("delete from chatcontent where id='$id'") ;
if($result){
echo "1" ;
//echo "<script type='text/javascript'>window.location='del.php' ;" ;
}
mysql_close() ;
?>
<div class="clear"></div>
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