VUE realizes that the pop-up box disappears when you click on a blank page

VUE realizes that the pop-up box disappears when you click on a blank page

You can implement a pop-up box in Vue and then hide the pop-up window by clicking on a blank page. The specific implementation is as follows:

1. Create popup box component

Create a pop-up box component in Vue to present the content and style of the pop-up box. This component should accept two props, one is show, which indicates whether the pop-up box is displayed, and the other is onClose, which indicates the closing function of the pop-up box.

<template>
  <div v-if="show" class="modal">
    <div class="modal-body">
      <slot></slot>
      <button @click="onClose">关闭</button>
    </div>
  </div>
</template>

<script>
export default {
  props: ['show', 'onClose']
}
</script>

2. Create parent component

Use the above pop-up box component in the parent component, bind a click event to the document in the blank area, and close the pop-up box when the non-pop-up box area is clicked.

<template>
  <div class="page">
    <button @click="showModal = true">弹出框</button>
    <modal :show="showModal" :onClose="closeModal">
      <p>这是弹出框的内容</p>
    </modal>
  </div>
</template>

<script>
import Modal from './Modal.vue'

export default {
  components: {
    Modal
  },

  data() {
    return {
      showModal: false
    }
  },

  created() {
    document.addEventListener('click', this.onClickOutside);
  },

  beforeDestroy() {
    document.removeEventListener('click', this.onClickOutside);
  },

  methods: {
    onClickOutside(event) {
      if (this.showModal && !this.$el.contains(event.target)) {
        this.closeModal();
      }
    },

    closeModal() {
      this.showModal = false
    }
  }
}
</script>

In the parent component, we use the v-if directive to determine whether the pop-up box is displayed. At the same time, we bound a click event to the document in the created hook function to listen for click events on the page. In the onClickOutside method, if the current pop-up box is displayed and the clicked element is not an element within the pop-up box, close the pop-up box. In the closeModal method, we set showModal to false to hide the popup box component.

3. Add style

Finally, we add some simple styles to the popup and parent components.

<style>
.page {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1000;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
}

.modal-body {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  padding: 20px;
}
</style>

The above is the entire code implementation of Vue to realize that the pop-up box disappears when you click on a blank page.