Determining When to Activate Button Based on Angular - Verifying That All Choices Have Been Ch

This quiz application requires the user to choose options before proceeding to the next page, with the next button being disabled by default. Once all options are chosen, the next button should become enabled.

NOTE:

Although the functionality for selecting options and determining correct/incorrect choices is working properly, I am struggling with enabling the next button when each option is selected individually.

If you have any suggestions or can provide assistance, please let me know. Check out the working demo here: https://stackblitz.com/edit/angular-ivy-5qtyxy

buttonDisabled = true;

<button class="btn-next" [disabled]="buttonDisabled">
  Next
</button>
javascriptangulartypescriptclickangular-directive

Answer №1

My approach to this issue is defining the buttonDisabled as a getter and then evaluating each question's status to determine if navigation to the next page is permissible...

In my setup, users are required to select all answers for type-2 questions, but only one answer for type-1 questions. If this doesn't align with your preferences, please let me know in the comments - it just seemed like the most logical choice to me. I hope this information proves helpful to you.

If you have any questions, feel free to ask.

Check out my stackblitz here

Answer №2

If you're looking to check for a specific condition, you can utilize Object.keys in the following manner:

Page.component.html

<div class="content">
    Your content here
</div>

page.component.ts

checkCondition(): boolean {
  return Object.keys(this.data).length > 10;
}

Answer №3

If you want to optimize your code in Angular, consider following the Angular way as demonstrated here:

https://angular.io/guide/forms-overview

There are essentially two approaches: template-driven or reactive forms.

You can then link the disabled property to the form's validity status.

Choose the method that aligns best with your requirements. Hopefully, this will prove helpful to you.

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