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Javascript 从Ajax调用获取响应_Javascript_Ajax - Fatal编程技术网

Javascript 从Ajax调用获取响应

Javascript 从Ajax调用获取响应,javascript,ajax,Javascript,Ajax,当试图从普通javascript中构建的ajax调用中获取responseText时,Firebug似乎看到了请求,但无法获取对responseText的引用 这是函数的代码 function getAjaxResponse(){ var ajaxObj = getAjaxObj(); ajaxObj.open('get', 'responsePage.php', true); ajaxObj.onReadyStateChanged = function(){

当试图从普通javascript中构建的ajax调用中获取responseText时,Firebug似乎看到了请求,但无法获取对responseText的引用

这是函数的代码

function getAjaxResponse(){    
    var ajaxObj = getAjaxObj();
    ajaxObj.open('get', 'responsePage.php', true);
    ajaxObj.onReadyStateChanged = function(){
        if(ajaxObj.readyState == 4
            && ajaxObj.status == 200){
                //no functions are getting fired in here                
                //this does not get logged to console
                console.log(ajaxObj.responseText);
                //neither does this
                console.log(2);
        }
    };
    ajaxObj.send(null);

   //this does gets logged to console
   console.log(1);
}
用于ajax对象的函数

function getAjaxObj(){
    var req;  
    if(window.XMLHttpRequest){
        try{
            req = new XMLHttpRequest();                                                                 
        } catch(e){
            req = false;
        } finally {
            return req;
        }
    } else {
        if(window.ActiveXObject){
            try{
                req = new ActiveXObject("Msxml2.XMLHTTP");
            } catch(e){
                try{
                    req = new ActiveXObject("Msxml.XMLHTTP");
                } catch(e){
                    req = false;
                } finally {
                    return req;
            }
            }
        }
    }
}
这里还有firebug的视图


如何从ajax调用获取响应的引用?

onreadystatechange
需要是
onreadystatechange
。JavaScript区分大小写。

onreadystatechange
需要是
onreadystatechange
。JavaScript是区分大小写的。

onreadystatechange
都应该是小写的(并且没有尾随的'd')

ajaxObj.onreadystatechange
onreadystatechange
都应该是小写的(并且没有尾随的'd')

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