What is the reason behind having to press the Tab button twice for it to work?

Question

What is the reason behind having to press the Tab button twice for it to work?

Currently, I am implementing a Tabbed Form with jQuery Functionality in Angular 4. The Tabbed Form itself is functioning, but I've noticed that I have to click the Tab Button twice for it to respond. See the code snippet below:

TS

declare var jquery: any;
declare var $: any;

export class AppComponent {
  title = 'Angular App';

  toggleEvent() {
    $('.toggle').on('click', function() {
      $('.container').stop().addClass('active');
    });
    $('.close').on('click', function() {
      $('.container').stop().removeClass('active');
    });

  }

}

HTML

<div class="card alt" (click)="toggleEvent()">
..
..
</div>

Just to clarify, I have integrated jQuery functionality into my Angular 4 project because I am attempting to incorporate a Bootstrap (HTML, CSS, JS) App into Angular 4 to ensure my Tabbed Form functions seamlessly as it does in bootstrap.

However, why is it necessary to click the Tab Button twice before it responds? I have reviewed the code and can't seem to pinpoint what may be causing this issue.

angular typescript

Answer 1

Answer №1

You may be experiencing this issue due to conflicting libraries trying to achieve the same goal. One option is to eliminate JQuery completely and create the implementation using pure Angular-Typescript, or alternatively utilize JQuery instead of Angular to avoid any interference.

Identifying the root cause of the problem and determining the most effective solution can be challenging in this scenario.

Answer 2

You may be experiencing this issue due to conflicting libraries trying to achieve the same goal. One option is to eliminate JQuery completely and create the implementation using pure Angular-Typescript, or alternatively utilize JQuery instead of Angular to avoid any interference.

Identifying the root cause of the problem and determining the most effective solution can be challenging in this scenario.

Answer 3

Answer №2

If you are unsure about the version of Angular you are using, there is no need to resort to jQuery for such a simple task. You can achieve the desired functionality by trying the following approach:

HTML:

<div class="card alt" (click)="toggleEvent()">
    <div class="container" [class.active]="active">
     ...
    </div>
</div>

TS:

export class AppComponent {
  title = 'Angular App';
  active = true;

  toggleEvent(){
     this.active = !this.active;
  }     
}

This example is simplified, as ideally each "Tab" should be a component with its own "active" boolean property. The App Component should only maintain a list of different "Tab" components.

To address your main concern, it is likely that you are facing an issue because you are invoking the function in (click)="toggleEvent()" through angular, while also using JQuery's .on('click', function()) within your function. This setup might necessitate two clicks before triggering a response. Removing the `.on('click')` from your JQuery code will ensure that only one click is required for the desired outcome.

Answer 4

If you are unsure about the version of Angular you are using, there is no need to resort to jQuery for such a simple task. You can achieve the desired functionality by trying the following approach:

HTML:

<div class="card alt" (click)="toggleEvent()">
    <div class="container" [class.active]="active">
     ...
    </div>
</div>

TS:

export class AppComponent {
  title = 'Angular App';
  active = true;

  toggleEvent(){
     this.active = !this.active;
  }     
}

This example is simplified, as ideally each "Tab" should be a component with its own "active" boolean property. The App Component should only maintain a list of different "Tab" components.

To address your main concern, it is likely that you are facing an issue because you are invoking the function in (click)="toggleEvent()" through angular, while also using JQuery's .on('click', function()) within your function. This setup might necessitate two clicks before triggering a response. Removing the `.on('click')` from your JQuery code will ensure that only one click is required for the desired outcome.

Answer 5

Answer №3

After thorough exploration, I have successfully unraveled the solution and believe that sharing my approach will greatly benefit others. The key realization was that the first click triggers initialization, while the second executes the action. To enhance this process, I leveraged the Angular ngOnInit() lifecycle hook. Instead of creating separate click events, I encapsulated the jQuery functionality inside ngOnInit(), resulting in the following TypeScript file:

import { Component, OnInit } from '@angular/core';

declare var jquery: any;
declare var $: any;

@Component({
  selector: 'app-login',
  templateUrl: './login.component.html',
  styleUrls: ['./login.component.css']
})
export class LoginComponent implements OnInit {

  constructor() { }

  ngOnInit() {
    $('.toggle').on('click', function() {
      $('.container').stop().addClass('active');
    });
    $('.close').on('click', function() {
      $('.container').stop().removeClass('active');
    });
  }

}

By implementing this approach, there is no need to add any additional click events in your HTML file. The updated HTML structure becomes:

<div class="card alt">
..
..
</div>

The utilization of ngOnInit() ensures that the directive/component initializes after Angular displays the data-bound properties, facilitating immediate functionality upon page load.

Answer 6

After thorough exploration, I have successfully unraveled the solution and believe that sharing my approach will greatly benefit others. The key realization was that the first click triggers initialization, while the second executes the action. To enhance this process, I leveraged the Angular ngOnInit() lifecycle hook. Instead of creating separate click events, I encapsulated the jQuery functionality inside ngOnInit(), resulting in the following TypeScript file:

import { Component, OnInit } from '@angular/core';

declare var jquery: any;
declare var $: any;

@Component({
  selector: 'app-login',
  templateUrl: './login.component.html',
  styleUrls: ['./login.component.css']
})
export class LoginComponent implements OnInit {

  constructor() { }

  ngOnInit() {
    $('.toggle').on('click', function() {
      $('.container').stop().addClass('active');
    });
    $('.close').on('click', function() {
      $('.container').stop().removeClass('active');
    });
  }

}

By implementing this approach, there is no need to add any additional click events in your HTML file. The updated HTML structure becomes:

<div class="card alt">
..
..
</div>

The utilization of ngOnInit() ensures that the directive/component initializes after Angular displays the data-bound properties, facilitating immediate functionality upon page load.

What is the reason behind having to press the Tab button twice for it to work?

Answer №1

Answer №2

Answer №3

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