Problem with making a timeline that dynamically animates a different element every repetition, with Vue

[Sameh_07]

I'm trying to make a simple slider that animates-in then out one slide after the other according to the currentStep variable, which gets incremented by 1 at the end of every slide, but nonetheless , I end up getting the same slide over and over again and can't figure out why...

 

See the Pen mdmPwMN by samehhashy (@samehhashy) on CodePen.

[Cassie]

You're only adding slide 1 to the timeline.

The component mounts - you add the animation for slide one, then on timeline complete you increment the item number but you don't actually add anything else to the timeline.

It's just looping the one slide you've told it to animate.

[Sameh_07]

2 minutes ago, Cassie said:

You're only adding slide 1 to the timeline.

The component mounts - you add the animation for slide one, then on timeline complete you increment the item number but you don't actually add anything else to the timeline.

It's just looping the one slide you've told it to animate.

What I wanted to do is to repeat the same timeline but for the new slide, hoping that by then the ref would be updated.

Is there something wrong with this logic?

[Cassie]

That's not how timeline's work - a repeat isn't like a code loop. It's an animation loop.

It's repeating the animation using the element it was instantiated with (slide 1) So it'll just repeat slide 1 forever.

 

If you want to loop through and add the other slides to that timeline you'll need to actually make an if/while/foreach loop

[GreenSock]

Here's an example of what @Cassie was describing: 

See the Pen oNWxVgd by GreenSock (@GreenSock) on CodePen.

[OSUblake]

Vue tip. Use a single ref name with v-for.

<div :key="i" ref="items" class="item"></div>

 

It will automatically add them to an array.

this.items.forEach((cur, i) => {
  let item = this.$refs.items[i];
  ...
});

 

See the Pen MWmyxbJ by GreenSock (@GreenSock) on CodePen.

 

[Sameh_07]

Thank you all! that's been very helpful.
I now understand what exactly repeat does.

[Cassie]

And I know know more about Vue refs! *high five* ?