以前是三个比较常用的函数,先从别的地方copy过来,希望对自己今后的学习有帮助:
var xmlHttpfunction createXMLHttpRequest(){ if (window.ActiveXObject){ xmlHttp = new ActiveXObject("Microsoft.XMLHttp"); } else if (windows.XMLHttpRequest){ xmlHttp = new XMLHttpRequest(); }}function startRequest(){ createXMLHttpRequest(); xmlHttp.onreadystatechange = handleStateChange; xmlHttp.open("GET","innerHTML.xml",true); xmlHttp.send(null);}function handleStateChange(){ if(xmlHttp.readyState == 4){ if(xmlHttp.status == 200){ document.getElementById("results").innerHTML = xmlHttp.responseText; } }}Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=666871
ajax的类的使用方法var classajax = new Ajax(url,recvT,stringS,resultF);classajax.post();//post方式发送数据classajax.get();//get方式发送数据url发送地址 recvT 接受数据类型 0为xml 1为text resultF 返回结果处理函数例var ajax1 = new Ajax("1.asp",0,"id="+id,bacal);ajax1.post();function bacal(rexm){返回数据处理函数;} 程序代码function Ajax(url,recvT,stringS,resultF) { this.url = url; this.stringS = stringS; this.xmlHttp = this.createXMLHttpRequest(); if (this.xmlHttp == null) { alert("erro");return;} var objxml = this.xmlHttp; objxml.onreadystatechange = function (){Ajax.handleStateChange(objxml,recvT,resultF)};}Ajax.prototype.createXMLHttpRequest = function() {try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch(e) {}try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {}try { return new XMLHttpRequest(); } catch(e) {}return null;}Ajax.prototype.createQueryString = function () { var queryString = this.stringS; return queryString;}Ajax.prototype.get = function () { url = this.url; var queryString = url+"?timeStamp=" + new Date().getTime() + "&" + this.createQueryString(); this.xmlHttp.open("GET",queryString,true); this.xmlHttp.send(null);}Ajax.prototype.post = function() { url = this.url; var url = url + "?timeStamp=" + new Date().getTime(); var queryString = this.createQueryString(); this.xmlHttp.open("POST",url,true); this.xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); this.xmlHttp.send(queryString);} Ajax.handleStateChange = function (xmlHttp,recvT,resultF) { if (xmlHttp.readyState == 4) { if (xmlHttp.status == 200) { resultF(recvT?xmlHttp.responseXML:xmlHttp.responseText); } else { alert("您所请求的页面有异常。"); } }}使用方法var classajax = new Ajax(url,recvT,stringS,resultF);classajax.post();//post方式发送数据classajax.get();//get方式发送数据url发送地址 recvT 接受数据类型 0为xml 1为text resultF 返回结果处理函数例var ajax1 = new Ajax("1.asp",0,"id="+id,bacal);ajax1.post();function bacal(rexm){返回数据处理函数;} 程序代码function Ajax(url,recvT,stringS,resultF) { this.url = url; this.stringS = stringS; this.xmlHttp = this.createXMLHttpRequest(); if (this.xmlHttp == null) { alert("erro");return;} var objxml = this.xmlHttp; objxml.onreadystatechange = function (){Ajax.handleStateChange(objxml,recvT,resultF)};}Ajax.prototype.createXMLHttpRequest = function() {try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch(e) {}try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {}try { return new XMLHttpRequest(); } catch(e) {}return null;}Ajax.prototype.createQueryString = function () { var queryString = this.stringS; return queryString;}Ajax.prototype.get = function () { url = this.url; var queryString = url+"?timeStamp=" + new Date().getTime() + "&" + this.createQueryString(); this.xmlHttp.open("GET",queryString,true); this.xmlHttp.send(null);}Ajax.prototype.post = function() { url = this.url; var url = url + "?timeStamp=" + new Date().getTime(); var queryString = this.createQueryString(); this.xmlHttp.open("POST",url,true); this.xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); this.xmlHttp.send(queryString);} Ajax.handleStateChange = function (xmlHttp,recvT,resultF) { if (xmlHttp.readyState == 4) { if (xmlHttp.status == 200) { resultF(recvT?xmlHttp.responseXML:xmlHttp.responseText); } else { alert("您所请求的页面有异常。"); } }}Trackback: http://tb.blog.csdn.net/TrackBack.aspx?PostId=740623
