手写ajax
来源:百度知道 编辑:UC知道 时间:2024/06/15 18:42:30
var xmlHttp = null;
function createXMLHttpRequest(){
if(window.XMLHttpRequest){
xmlHttp = new XMLHttpRequest();
}else if(window.ActiveXObject){
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
}
function showTasks(method,ps,pn){
if(ps !="no")
pageSize = ps;
if(pn !="no")
pageNo = pn;
if(method != 0)
action = method;
createXMLHttpRequest();
var url = "提交的地址"
xmlHttp.open("GET",url,true);
xmlHttp.setRequestHeader("If-Modified-Since","0");
xmlHttp.onreadystatechange = callbackTask;
xmlHttp.send(null);
}
function callbackTask(){
if (xmlHttp.readyState == 4) {
if (xmlHttp.status == 200) {
var doc = xmlHttp.responseXML;
xmlHttp.responseTEXT;
}
}
}