<SCRIPT language=javascript>
var xmlhttp;
//初始化xmlhttp
if(window.XMLHttpRequest)//IE7, Mozilla ,Firefox等浏览器内置该对象
{
xmlhttp = new XMLHttpRequest();
}
else if(window.ActiveXObject)//IE6,IE=5
{
try
{
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{ }
if (xmlhttp == null)
{
try
{
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e)
{ }
}
}
//取得用户的其他资源
xmlhttp.open("POST",'LastestResource.aspx',false);
xmlhttp.send();
show1=xmlhttp.responseText;//alert(show1);
document.getElementById('latestrs').innerHTML=show1;</SCRIPT>这段代码在页面中,如果该页面不加form就可以正常执行,显示数据,为什么加上form就不行了呢?
var xmlhttp;
//初始化xmlhttp
if(window.XMLHttpRequest)//IE7, Mozilla ,Firefox等浏览器内置该对象
{
xmlhttp = new XMLHttpRequest();
}
else if(window.ActiveXObject)//IE6,IE=5
{
try
{
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{ }
if (xmlhttp == null)
{
try
{
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e)
{ }
}
}
//取得用户的其他资源
xmlhttp.open("POST",'LastestResource.aspx',false);
xmlhttp.send();
show1=xmlhttp.responseText;//alert(show1);
document.getElementById('latestrs').innerHTML=show1;</SCRIPT>这段代码在页面中,如果该页面不加form就可以正常执行,显示数据,为什么加上form就不行了呢?
/*
** <summary>
** ajax应用
** </summary>
** <param name="url">资源地址</param>
** <param name="callback">回调方法</param>
** <param name="method">请求方式</param>
** <param name="data">所发送数据</param>
*/
sl.ajax = function(url ,callback ,method ,data){
var method = method ? method : "get";
var data = data ? data : null;
var url = (method == "get") ? (url +"?"+ data) : url;
var http = window.XMLHttpRequest? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
var doGet = function(){
http.open(method ,url ,false);
http.setRequestHeader("If-Modified-Since" , "0" );
http.send(null);
callback(http.responseText);
};
var doPost = function(){
http.open(method ,url ,false);
http.setRequestHeader("content-length" ,data ?data.length : 0);
http.setRequestHeader("Content-Type" ,"application/x-www-form-urlencoded");
http.send(data);
callback(http.responseText);
};
if (method == "post")
{
doPost();
}
else
{
doGet();
}
http = null;
};