Hi Sebastian,
You can attach a generic function to onreadystatechange which sets the
responseStream to a img object you pass by reference:
function loadImage(url, img) {
var req = new XMLHttpRequest();
req.onreadystatechange = function() {
if (req.readyState == 4) {
if (req.status == 200) {
img.src = req.responseStream;
}
}
}
req.open('GET', url, true);
req.send();
}
Best regards,
Benjamin
On Jan 15, 12:03 am, Sebastian <[email protected]> wrote:
> Hi,
>
> I am stuck on some ugly code I am trying to optimize. The problem is,
> that I cannot reference to a variable without using eval (which is
> unsafe and slow). I tried to replace it with the square bracket
> notation (while removing the quotes in the function call), but cannot
> get it to work. Any help is much appreciated!
> Here is the code:
>
> var logoload;
> var logourl="http://foo.bar";;
>
> function viewonopen()
> {
> XHR("logoload", "logourl", "loadlogo");}
>
> function XHR(name, url, readystatefunction) {
> mycode = name +"=null;";
> mycode += name +"=new XMLHttpRequest();";
> mycode += name +".onreadystatechange="+readystatefunction+";";
> mycode += name +".open(\"GET\","+url+",true);";
> mycode += name +".send(null);";
> eval(mycode);}
>
> function loadlogo() {
> if(logoload.readyState!=4) return; // NOT READY
> if(logoload.status!=200) return; // FAILED
> img1.src = logoload.responseStream;
> img1.visible = true;
> logoload = null;
>
> }
>
> Thanks,
> Sebastian
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