Error in Internet Explorer 9: Unable to access the 'ajax' property value as the object is either null or undefined

Issue with IE9

I am facing a challenge while trying to display a map on a webpage using Ajax data fetching. Despite working smoothly on all browsers, the map fails to load on IE9.

An error message pops up:

SCRIPT5007: Unable to get value of the property 'ajax': object is null or undefined

The code snippet causing the issue is as follows:

       var mapModel = new Map(); 

       mapModel.get("leads").fetch({success: function(){ //error on this line
              var mapView = new MapView({ model: mapModel });
              $('body').append(mapView.el);
              mapView.render();
           }});

Troubleshooting Attempt

This appears to be a common problem, as evident from the discussions on stackoverflow. I tried adding:

 <meta http-equiv="X-UA-Compatible" content="IE=8"/>

Unfortunately, it did not resolve the issue.

Seeking Solution

What steps should I take to resolve this compatibility issue in IE9?

Answer №1

After some investigation, I was able to identify the issue:

The website in question was being displayed in compatibility mode by IE9.

To resolve this, I included the following line as the topmost item in the header section:

<meta http-equiv="X-UA-Compatible" content="IE=edge" >

Following this adjustment, the site now functions correctly.

Answer №2

At long last, I managed to resolve this problem.

I discovered that the script manager in my master page was causing issues. After replacing it with ToolkitScriptManager from AjaxControlToolkit 4.0, everything started functioning perfectly.

I'm thrilled with the outcome.

Fingers crossed that this solution can assist others as well.

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