In my experience, getElementsByTagName() is notoriously unreliable
and will give different answers at different times for no apparent
reason. Write a function to replace it and use that instead.
Guy
On 14/12/2006, at 3:32 AM, vinay wrote:
> I have a problem with ajax
>
> Actually i do not know whether its an ajax issue or its with
> AdobeSVGViewer
>
> I have developed orgchart.
> I specified a link which would get me the direct reportees of a
> manager(orgchart node) and when you click on the link (+) it would
> make an ajax call to get the direct reports and it would display them
> in svg.
> and change the link text to (-).
>
> Now when I again click on (-) the direct reports would vanish ( am
> actually removing the node using removeChild() method). Which would
> again make the link text to (+)
>
> Now the problem is , when i click on the (+) it throws and error
> getElementsByTagName(...).item(..) is null. Which does not make sense
> cause the first time its working and the second time it fails.
>
> And most importantly third time it does not fail. And from the third
> time it behaves randomly. Which makes my head go round and round..
>
> I even tried to display the node details (ie the svg content ) all is
> correct.
>
> And one very important thing. This only happend in IE, Not in Mozilla
>
> Can some body help me please. Am I missing some point here????
>
> Following is the code snippet
>
>
> function getUserId(node){
> var userId = null;
> if (node){
> userId =
> node.getElementsByTagName("user").item(0).getAttribute("id"); // Place
> Where the error shows up
> }
> return userId;
> }
>
>
>
> // Ajax Call back method
>
> function callback(userId,page_request){
> if ((page_request.readyState == 4)) {
> if (page_request.responseText!="" ) {
> var drNodes =
> convertStrToDomNode(page_request.responseText).firstChild;
> //alert(drNodes.getAttribute("id").indexOf("DIRECTREPORTEES_"));
>
> if (drNodes.getAttribute("id").indexOf("DIRECTREPORTEES_")>=0){
> if (drNodes.childNodes.length >0){
>
> var newUserId = getUserId(drNodes.firstChild);// Place where the
> error starts
>
> var managerNode = SVGDocument.getElementById("USER_"+userId);
> var directreporteesNode = getDIRECTREPORTEESNode(managerNode);
> if (directreporteesNode == null || directreporteesNode == ""){
>
>
>
> Thanks in Advance
> Vinay Gajjala
>
>
>
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