How to Increase/Decrease Z-Index on Button Click in Vue.js 3

<template>
  <div>
    <button @click="increaseZIndex">Increase Z-Index</button>
    <button @click="decreaseZIndex">Decrease Z-Index</button>
  </div>
</template>

<script>
export default {
  methods: {
    increaseZIndex() {
      this.$emit('increase-z-index');
    },
    decreaseZIndex() {
      this.$emit('decrease-z-index');
    }
  }
}
</script>


In this example, we have created a button component with two buttons: one to increase the z-index and one to decrease it. The @click directive is used to trigger the increaseZIndex and decreaseZIndex methods when the buttons are clicked. These methods emit custom events with the names increase-z-index and decrease-z-index, respectively.

Next, we need to create a div element that will have its z-index increased or decreased when the buttons are clicked. We will also need to listen for the custom events emitted by the button component and update the z-index accordingly. Here is an example of how this can be done:

<template>
  <div>
    <button-component @increase-z-index="increaseZIndex" @decrease-z-index="decreaseZIndex" />
    <div :style="{ zIndex: zIndex }" class="turn-animation">
      
    </div>
  </div>
</template>

<script>
import ButtonComponent from './ButtonComponent.vue';

export default {
  components: {
    ButtonComponent
  },
  data() {
    return {
      zIndex: 1
    };
  },
  methods: {
    increaseZIndex() {
      this.zIndex++;
    },
    decreaseZIndex() {
      this.zIndex--;
    }
  }
}
</script>


In this example, we have imported the button component and added it to the template. We have also added a div element with a dynamic z-index property that is bound to the zIndex data property. The increaseZIndex and decreaseZIndex methods are called when the custom events are emitted by the button component, and the z-index is updated accordingly.

Applications and Significance

Increasing and decreasing the z-index on button click can be useful in creating animations and transitions between pages or sections of a website. For example, you could use this technique to create a sliding


  
References:
  
MDN Web Docs: z-index
  
Vue.js Guide: Emitting a Value with an Event


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