Improve your code by avoiding the use of multiple ngIf statements

Looking for ways to shorten my code for better readability. I have multiple ngIf statements with various conditions for numbering lists (e.g., 1, 1.1, 1.1.1)

Here is a snippet of the code from my template:

<span *ngIf="...">{{...}}.</span>
...
<span *ngIf="...">...</span>

This code block will be repeated in other columns with additional interpolation, making it lengthy and repetitive throughout my project.

Any suggestions on how to optimize this code? Your input is appreciated!

Check out my code on StackBlitz

Answer №1

If you're looking to implement conditional rendering in Angular, you can utilize the ngSwitch directive along with a function to determine which ngSwitchCase to display based on a specific value.

<div [ngSwitch]="hero?.emotion">
  <app-happy-hero    *ngSwitchCase="'happy'"    [hero]="hero"></app-happy-hero>
  <app-sad-hero      *ngSwitchCase="'sad'"      [hero]="hero"></app-sad-hero>
  <app-confused-hero *ngSwitchCase="'app-confused'" [hero]="hero"></app-confused-hero>
  <app-unknown-hero  *ngSwitchDefault           [hero]="hero"></app-unknown-hero>
</div>

Answer №2

It is recommended to encapsulate all your code logic within a method, such as getNumberingOrder(), that will return the desired string. This can then be displayed simply using :

<span>{{getNumberingOrder()}}</span>
.

Remember to pass parameters to this function as needed.

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