Vuejs and Vue.set(), update array

Question

I'm new to Vuejs. Made something, but I don't know it's the simple / right way.

what I want

I want some dates in an array and update them on a event. First I tried Vue.set, but it dind't work out. Now after changing my array item:

this.items[index] = val;
this.items.push();

I push() nothing to the array and it will update.. But sometimes the last item will be hidden, somehow... I think this solution is a bit hacky, how can I make it stable?

Simple code is here:

Answer 1

EDIT 2

• For all object changes that need reactivity use Vue.set(object, prop, value)
• For array mutations, you can look at the currently supported list here

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EDIT 1

For vuex you will want to do Vue.set(state.object, key, value)

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Original

So just for others who come to this question. It appears at some point in Vue 2.* they removed this.items.$set(index, val) in favor of this.$set(this.items, index, val).

Splice is still available and here is a link to array mutation methods available in vue link.