How to get dom elements in vue

In Vue, there are three ways to obtain DOM elements: 1. Use the ref attribute to specify a reference variable for the element and access it through this.$refs; 2. Directly use the root element of the component this.$el; 3. . Use the querySelector method to query on bound elements.

Get DOM elements in Vue

In Vue applications, you can get DOM elements through the following methods:

1. ref attribute

• Add the ref attribute to a component or element and specify a reference variable name.
• In a Vue instance, you can use the this.$refs object to access elements with the ref attribute.

<template>
  <div ref="myDiv"></div>
</template>

<script>
import { ref } from 'vue'

export default {
  setup() {
    const myDiv = ref(null)  // 声明一个空引用变量
    return { myDiv }
  },
  mounted() {
    console.log(this.$refs.myDiv)  // myDiv 元素
  }
}
</script>

2. $el attribute

• $el The attribute points to the root element of the current component.

<template>
  <div></div>
</template>

<script>
import { ref } from 'vue'

export default {
  setup() {
    const myDiv = ref(null)  // 声明一个空引用变量
    return { myDiv }
  },
  mounted() {
    console.log(this.$el)  // 组件的根元素
  }
}
</script>

3. querySelector

• Call the querySelector method on the element bound using the Vue instance.

<template>
  <div></div>
</template>

<script>
import { ref } from 'vue'

export default {
  setup() {
    // 绑定一个空引用变量
    const myDiv = ref(null)
    return { myDiv }
  },
  mounted() {
    this.myDiv.value = this.$el.querySelector('div')
  }
}
</script>

The above is the detailed content of How to get dom elements in vue. For more information, please follow other related articles on the PHP Chinese website!