Creating a transition when changing properties in angular 2/4

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情书的邮戳
情书的邮戳 2020-12-31 19:10

I want to create a transition effect whenever I change the value of a property.

I tried doing the following

    @Component({   
    selector: \'ima         


        
2条回答
  •  南方客
    南方客 (楼主)
    2020-12-31 19:56

    this.slide = !this.slide would be true and false but when I look at your trigger you are saying [@slideInRight]="slide"

    so basically, true or false.

    but when I look in your animations I see :enter and :leave

    what if instead you did 'true' and 'false' or try 1 and 0

    then your animations would work when slideInRight is true or false and it would trigger the corresponding animation for true and false.

        trigger('work', [
      state('*', style({transform: 'translateX(0)', opacity: 1})),
      state('true', style({'border-right': '50px solid #72BF44', opacity: 1})),
      state('false', style({'border-right': '20px solid #72BF44', opacity: 1})),
      transition('1 => 0', animate('.125s .1s cubic-bezier(0.29, 0.06, 0.43, 0.92)')),
      transition('0 => 1', animate('.125s 0s cubic-bezier(0.29, 0.06, 0.43, 0.92)')),
      transition('void => *', [
        style({transform: 'translateX(-100%)', opacity: 0}),
        animate('1s 1.1s cubic-bezier(0.29, 0.06, 0.43, 0.92)')
      ])
    ])
    

    I've included a sample trigger that I have used in a application.

    you need to setup your states for on and off / true and false or whatever variable values you want (string, etc).

    then you have a transition that goes from... true to false, or false to true, or void to true, whatever your previous state and current state are, that transition will trigger.

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