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In this tutorial, we will see a most common error faced by the Angular developers named as "TypeError Cannot read property of undefined".So we will see how t...
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Getting the error: TypeError: Cannot read property 'ignoreAuthModule' of undefined. in your AngularJS app? ignoreAuthModule is part of the 3rd party angular-http-auth module, where an interceptor is used to buffer requests and allow a visitor to log in to your app after requests requiring privileges are made. Discovery 3 air suspension front valve block.
How can this be undefined in the constructor of an Angular config class? angularjs,constructor,typescript,undefined,this. Config functions aren't classes and shouldn't be written as such. Angular is invoking them without new and thus this will be undefined (or, God help you, window in non-strict mode). Error typeerror cannot read property of undefined angular 4. As your data is not defined initially, you cannot access the name property of it. The Angular safe navigation operator (.) is a fluent and convenient way to guard against null and undefined values in property paths. Here it is, protecting against a view render failure if the currentHero is null.