Question

57

Ajax won't get past readyState 1, why?

rated 0 times [ 58] [ 1] / answers: 1 / hits: 55237 / 15 Years ago, wed, april 15, 2009, 12:00:00

I'm trying to get this function to work, which does a request for parameter url then sends the responseText to callback which is a function.

It seems that it only gets to readyState 1 (thanks to the Firebug commands).

Here it is:

function Request(url, callback){

if (window.XMLHttpRequest) { // Mozilla, Safari, ...

    httpRequest = new XMLHttpRequest();

} else if (window.ActiveXObject) { // IE

    httpRequest = new ActiveXObject(Microsoft.XMLHTTP);

} else{

    return false;

}

httpRequest.onreadystatechange = function(){

    console.log(httpRequest.readyState);

    if (httpRequest.readyState == 4) {

        callback(httpRequest.responseText);

    }

};

console.log(httpRequest, url);

httpRequest.open('GET', url, true);

httpRequest.send(null);

}

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rocioblancac

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answered 15 Years ago tristab · Accepted Answer

I workarounded this problem assigning onload event instead of onreadystatechange:

function Request(url, callback){

if (window.XMLHttpRequest) { // Mozilla, Safari, ...

    httpRequest = new XMLHttpRequest();

} else if (window.ActiveXObject) { // IE

    httpRequest = new ActiveXObject(Microsoft.XMLHTTP);

} else{

        return false;

}



var readyStateChange = function(){

    console.log(httpRequest.readyState);



    if (httpRequest.readyState == 4) {

                callback(httpRequest.responseText);

    }

};





if (isFirefox && firefoxVersion > 3) {

    httpRequest.onload = readyStateChange;

} else {

    httpRequest.onreadystatechange = readyStateChange;

}



console.log(httpRequest, url);

httpRequest.open('GET', url, true);

httpRequest.send(null);

}