Encountering a null object reference error in AngularJS when using Internet Explorer

Issue:

Encountering an error when AngularJS is being loaded in Visual Studio 2015 via an intranet URL. The error is occurring in the AngularJS library at these specific lines:

    line 7:       if(H(b)||Ta(b))

(for angularjs.min.js)

    line 322:     } else if (isArray(obj) || isArrayLike(obj)) {

(for angularjs.js)

This error seems to be triggered when there is a second local site called "localhost-alternative" configured on 127.0.0.1. It's interesting to note that this issue only arises in Internet Explorer; other browsers like Chrome, Edge, or Firefox are not affected.

javascriptangularjswindowsvisual-studiointernet-explorer

Answer №1

When your browser fails to recognize that it is on your local PC, it defaults to intranet settings which can lead to compatibility issues. For example, Internet Explorer may switch to the outdated IE7 rendering engine in this scenario, causing problems with Angular functionality.

So, how can this be resolved?

To address this issue, you can include custom headers with each response. This can be achieved by adding the necessary headers to your web.config file:

    <?xml version="1.0" encoding="utf-8"?>
    <configuration>
      <system.webServer>
        <httpProtocol>
          <customHeaders>
            <add name="X-UA-Compatible" value="IE=edge" />
              ....

By including this header, Internet Explorer will use its current rendering engine instead of defaulting to an older one, ensuring AngularJS functions properly as intended.

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