Could a variable (not an element) be defined and controlled within an Angular 2 template?

For instance, envision a scenario where I have a series of input fields and I wish to assign the 'tab' attribute to them sequentially as we move down the page. Rather than hard-coding the tab numbers, I prefer to utilize a method that automatically increments the tab value. This way, if I decide to add a new input field later on, I won't have to manually adjust each tab number.

<input [attr.tab]="1" />
<input [attr.tab]="2" />
<input [attr.tab]="3" />

Is there a way to achieve this functionality within the confines of a component's template without encountering errors? I know that localized variables can be used in directives like *ngFor, but is it possible to implement something similar in a component template or any other context?

Could it be done using:

<input [attr.tab]="let i = 1, i" />
<input [attr.tab]="i++" />
<input [attr.tab]="i++" />

Template Syntax Documentation: https://angular.io/docs/ts/latest/guide/template-syntax.html

Edit: I am not interested in employing *ngFor or any sort of template loop for this purpose, as I am not aiming to define an inner template.

Answer №1

<input [attr.tab]="'1'" #tab1 />
<input [attr.tab]="tab1.getAttribute('tab') + 1" />
<input [attr.tab]="tab1.getAttribute('tab') + 2" />

For more information on this topic, you can refer to the following ongoing discussion. https://github.com/angular/angular/issues/2451

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