Tips for displaying a form after clicking with a delay in Angular 7

I need to update some AngularJS code for Angular 7.

There is a function that displays a new form below the main one when clicked.

HTML

<img [hidden]="!skillsToDelete" (click)="showFormDelete(skill)" title="Delete" class="cross" src="../../../assets/icon/deletex.png">

TypeScript

this.showCompDelete = false;

showFormDelete(skill) {
    this.showCompDelete = !this.showCompDelete;
    this.skillsToDelete.push(skill);
}

HTML DELETE COMPONENT

<div class="col-md-12 col-sm-12 newForm" id="deleteSkill" *ngIf="showCompDelete">

CSS

.newForm{
    padding-left: 0;
    height: auto;
    opacity: 1;
    transition: height ease 0.3s, opacity ease 0.3s, margin-bottom ease 0.3s, padding-top ease 0.3s
}

The transition effect is not working, even after trying -webkit extension.

This is how it used to be:

HTML

<div class="col-md-12 col-sm-12 newForm" id="deleteSkill" style="display: block;">

JavaScript

$scope.showDeleteForm = function () {
        $('#formSkill').hide(300);
        $('#formExp').hide(300);
        $('#initSkills').hide(300);
        $('#certifiedSkill').hide(300);

        if($scope.skillToDelete.length){
            $('#deleteSkill').show(300);
            setTimeout(function () {
                $('.yesno').show(200);
            }, 300);
        }
        else{
            $('#deleteSkill').hide(300);
            $('.yesno').hide(0);
        }

    };

I want to avoid using CSS and instead incorporate a show(300) method in TypeScript. However, any suggestions involving CSS are also welcome.

htmlcssangulartypescriptanimation

Answer №1

Instead of using CSS, you can utilize angular-animation

Check out the functional example code here

Import animation in your TypeScript file and implement it as shown below:

In animate('1000ms 3000ms', specify the duration of the animation (1 second in this case) and the delay time (3 seconds in this case)

import { Component } from '@angular/core';
import sdk from '@stackblitz/sdk';
import { animate, state, style, transition, trigger } from '@angular/animations';

@Component({
  selector: 'my-app',
  templateUrl: './app.component.html',
  styleUrls: [ './app.component.css' ],
  animations: [
        trigger('showAnimation', [
            transition(':enter', [
                style({opacity: 0}),
                animate('1000ms 3000ms', style({opacity: 1}))
            ]),
            transition(':leave', [
                state('invisible', style({opacity: 0})),
                style({opacity: 1}),
                animate('1000ms 3000ms', style({opacity: 0}))
            ])
        ])
    ],
})
export class AppComponent  {
skillsToDelete=false;
showCompDelete=false;
animationState="leave";

showFormDelete(skill) {
    this.showCompDelete = !this.showCompDelete;
    this.animationState=this.animationState=="enter"?'leave':'enter';
    // this.skillsToDelete.push(skill);
}
}

In your HTML file, make use of *ngIf with the following code:

<img *ngIf=  "!skillsToDelete"
 (click)="showFormDelete(skill)" title="Delete"
 class="cross"
 src="https://i.sstatic.net/B4Ha4.jpg">

 <div class="col-md-12 col-sm-12 newForm" id="deleteSkill" *ngIf="showCompDelete" [@showAnimation]="animationState"> 
 form with animation
 </div>

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