如何猎取ajax回调函数返回值 如何猎取ajax回调函数返回值谢谢!!!ajax 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 设置ajax为同步的的,就不用回调了,直接xhr.responseText就行了,如果是函数就return xhr.responseText异步的要使用ajax的返回值的代码必须放到readyState==4判断里面 function HttpRequest(sUrl,fpCallback){ this.request = this.createXmlHttpRequest(); this.request.open("GET",sUrl,true); var tempRequest = this.request; function request_readystatechange() { if (tempRequest.readyState == 4) { if (tempRequest.status == 200) { fpCallback(tempRequest.responseText); } else { return false; } } } this.request.onreadystatechange = request_readystatechange;}HttpRequest.prototype.createXmlHttpRequest = function (){ if (window.XMLHttpRequest) { var oHttp = new XMLHttpRequest(); return oHttp; } else if (window.ActiveXObject) { var versions = [ "MSXML2.XmlHttp.6.0", "MSXML2.XmlHttp.3.0" ]; for (var i = 0; 1 < versions.length; i++) { try { var oHttp = new ActiveXObject (versions[i]); return oHttp; } catch (error) { //do nothing here } } } return null;}HttpRequest.prototype.send = function (){ this.request.send(null);}function test4(sResponseText){ var a = document.getElementById("verifyInput"); if(sResponseText == a.value){ //a.style.borderColor = "#d3d3d3"; return false; }else{ alert(141111); //a.style.borderColor = "#ff0000"; return false; }}function verifys(){var request = new HttpRequest("http://127.0.0.1/test1/testverify.php",test4);request.send();}function testend(){if(verifys() == true){ //可是这个问题unfinedreturn true;}}document.getElementById('zhuce').onclick=function(){return testend()} 本帖最后由 showbo 于 2013-10-22 16:10:14 编辑 我感觉还是不行,原因是 "request"返回的是"object Object",我想要返回一个布尔值或者一个别的值。怎么把个这"object Object"......麻烦您了!!! 异步不行,只能放后学代码到test4里面进行处理,而不能通过verifys得到返回值,楼主先去了解下异步ajax怎么个操作过程 请教下各位大侠,此函数应如何保持循环调用? 用jscript来处理xml 关于在iframe中使用window.open的问题 ●●●●●●●●●●●●●●●●●●●●●●●●●●●css让我很痛苦 求css的终极解决方案???????????? 如保访问父页 请牛人帮我读代码(怀疑是木马) JS正则替换提取指定字符之间内容等 关于document.cookie 问几个标记是什么作用? 如何实现在提交表单之后跳转到指定页面?拜托。 关于js replace 过滤网址中的汉字问题 js库和js框架是一个概念吗
{ this.request = this.createXmlHttpRequest();
this.request.open("GET",sUrl,true); var tempRequest = this.request;
function request_readystatechange()
{ if (tempRequest.readyState == 4)
{ if (tempRequest.status == 200)
{
fpCallback(tempRequest.responseText);
}
else
{ return false; }
}
} this.request.onreadystatechange = request_readystatechange;}HttpRequest.prototype.createXmlHttpRequest = function ()
{
if (window.XMLHttpRequest)
{ var oHttp = new XMLHttpRequest();
return oHttp; }
else if (window.ActiveXObject)
{ var versions =
[
"MSXML2.XmlHttp.6.0",
"MSXML2.XmlHttp.3.0"
];
for (var i = 0; 1 < versions.length; i++)
{ try
{ var oHttp = new ActiveXObject (versions[i]);
return oHttp; }
catch (error)
{ //do nothing here }
}
} return null;}HttpRequest.prototype.send = function ()
{ this.request.send(null);}
function test4(sResponseText){
var a = document.getElementById("verifyInput");
if(sResponseText == a.value){
//a.style.borderColor = "#d3d3d3";
return false;
}else{
alert(141111);
//a.style.borderColor = "#ff0000";
return false;
}
}
function verifys(){
var request = new HttpRequest("http://127.0.0.1/test1/testverify.php",test4);
request.send();
}
function testend(){if(verifys() == true){ //可是这个问题unfined
return true;
}}document.getElementById('zhuce').onclick=function(){return testend()}
我感觉还是不行,原因是 "request"返回的是"object Object",我想要返回一个布尔值或者一个别的值。怎么把个这"object Object"......
麻烦您了!!!