[SalesForce] AJAX communication on visualforce > Internet Explorer 8/9 issues

Actually I found the solution finally.

Thanks to this guy's post in the developer forums. http://boards.developerforce.com/t5/Visualforce-Development/actionFunction-causing-Javascript-error-when-using-oncomplete-or/m-p/193724#M25961

The key was to override the Javascript function in question and add a try/catch block to ensure IE does not terminate the running code.

A4J.AJAX.XMLHttpRequest.prototype._copyAttribute = function (src, dst, attr) {
var value = src.getAttribute(attr);
if (value) {
    try {
        dst.setAttribute(attr, value);
    } catch (err) {
        //alert('Error with Salesforce: ' + err.description + '\nattr: ' + attr + '\n');
    }
}

};

I hope this helps someone who runs into this same issue with IE9.

Glad you showed us everything you tried. You are really close, man!

1. go to Setup > Remote Site Settings and create an entry for http://www.woopra.com/

2. create the following Visualforce Page and Apex Class, then view the page at /apex/Woopra

3. see if you get a 403 like I do ;-) then substitute your real credentials into the request headers

4. play until it gives you 200 OK, then remove the System.assert... (that was for debug)

5. eyeball the response data, and how you might go about parsing / displaying it...

Don't forget to update us! Here's how you might do your API call in Apex - try:

WoopraController.cls

public class WoopraController {

  public String Headers {get; set;}
  public String Response {get; set;}

  public void doRequest() {
  String data = '{'
    + '\n' + '"website":"yourwebsite",'
    + '\n' + '"segment":['
    + '\n' + '  {'
    + '\n' + '    "did":{'
    + '\n' + '      "operator":"AND",'
    + '\n' + '      "filters":['
    + '\n' + '        {'
    + '\n' + '          "scope":"actions",'
    + '\n' + '          "key":"name",'
    + '\n' + '          "match":"match",'
    + '\n' + '          "value":"quote"'
    + '\n' + '        }'
    + '\n' + '      ]'
    + '\n' + '    },'
    + '\n' + '    "are":{'
    + '\n' + '      "operator":"AND",'
    + '\n' + '      "filters":[]'
    + '\n' + '    }'
    + '\n' + '  }'
    + '\n' + '],'
    + '\n' + '"offset":0,'
    + '\n' + '"report_id":-1' +
  '}';

  System.HttpRequest request = new System.HttpRequest();
  request.setBody(data);
  request.setMethod('POST');
  request.setEndpoint('http://www.woopra.com/rest/search');
  request.setHeader('X-Api-Version',   '2.0');
  request.setHeader('X-Access-Id',     'APP_IDXXXXXXXX');
  request.setHeader('X-Access-Secret', 'SECRET_KEYXXXXXXX');

  System.HttpResponse response = new System.Http().send(request);
  System.assert(false, response); //remove this once you fix the 403
  this.Response = response.getBody();
  }
}

Woopra.page

<apex:page controller="WoopraController" action="{!doRequest}" contentType="text/plain">
  {!Headers}
  {!Response}
</apex:page>