Does the term 'alias' hold a special significance in programming?

Utilizing Angular 2 and Typescript, I have a component with a property defined as follows:

alias: string;

Attempting to bind this property to an input tag in my template like so:

<input class="form-control" type="text" required
                        [(ngModel)]="alias" ngControl="alias" #alias="ngForm" />

Upon executing this code, an error is thrown stating:

angular2.dev.js:23925 EXCEPTION: Error: Uncaught (in promise): Cannot reassign a variable binding alias

If I change the property name from 'alias' to 'nameOrAlias', everything functions as expected without any errors. Why is this happening?

angularjstypescriptangular

Answer №1

An error occurs when trying to reassign a variable binding alias ...

This issue arises from attempting to assign a template variable with the same name alias:

<input class="form-control" type="text" required
       [(ngModel)]="alias" ngControl="alias" #alias="ngForm" />
                                             <!-- ^--- "alias" reassignment -->

To resolve this, either rename the template variable or component property.

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