Having trouble getting Vue to properly focus on an input field

Question

Having trouble getting Vue to properly focus on an input field

I am attempting to use this.$refs.cInput.focus() (cInput being a ref) but it seems to not be functioning as expected. I expect that when I press the 'g' key, the input field should appear and the cursor should immediately focus on it, allowing me to input some data. The input field is visible, however, the focusing part is not working. No errors are appearing in the console.


Vue.component('coordform', {
  template: `<form id="popup-box" @submit.prevent="process" v-show="visible"><input type="text" ref="cInput" v-model="coords" placeholder =""></input></form>`,
  data() {
    {
      return { coords: '', visible: false }
    }
  },
  created() {
    window.addEventListener('keydown', this.toggle)
  },
  mounted() {
  },
  updated() {
  },
  destroyed() {
    window.removeEventListener('keydown', this.toggle)
  },
  methods: {
    toggle(e) {
      if (e.key == 'g') {
        this.visible = !this.visible;
        this.$refs.cInput.focus() //<--------not working
      }
    },
    process() {
        ...
    }
  }
});

javascript vue.js

Answer 1

Answer №1

To ensure that Vue.js updates the DOM after a data change, you can utilize the nextTick() callback function:

After setting vm.someData = 'new value', the component will not be re-rendered immediately. Instead, it will update in the following "tick" once the queue is flushed. [...]

If you want to wait until Vue.js has completed updating the DOM post-data change, simply use Vue.nextTick(callback) right after modifying the data. The provided callback will only occur after the DOM has finished updating.

(source)

You can implement this within your toggle function as shown below:

methods: {
  toggle(e) {
    if (e.key == 'g') {
      this.visible = !this.visible;
      this.$nextTick(() => this.$refs.cInput.focus())
    }
  }
}

Answer 2

To ensure that Vue.js updates the DOM after a data change, you can utilize the nextTick() callback function:

After setting vm.someData = 'new value', the component will not be re-rendered immediately. Instead, it will update in the following "tick" once the queue is flushed. [...]

If you want to wait until Vue.js has completed updating the DOM post-data change, simply use Vue.nextTick(callback) right after modifying the data. The provided callback will only occur after the DOM has finished updating.

(source)

You can implement this within your toggle function as shown below:

methods: {
  toggle(e) {
    if (e.key == 'g') {
      this.visible = !this.visible;
      this.$nextTick(() => this.$refs.cInput.focus())
    }
  }
}

Answer 3

Answer №2

In my personal experience, I found that nextTick didn't work as expected.

Instead, I opted to use setTimeout in the following way:

doSearch () {
  this.$nextTick(() => {
    if (this.$refs['search-input']) {
      setTimeout(() => {
        this.$refs['search-input'].blur()
      }, 300)
    }
  })
},

If you encounter a similar issue, try implementing the code like this:

toggle(e) {
  if (e.key == 'g') {
    this.visible = !this.visible;
    setTimeout(() => { this.$refs.cInput.focus() }, 300)
  }
}

Answer 4

In my personal experience, I found that nextTick didn't work as expected.

Instead, I opted to use setTimeout in the following way:

doSearch () {
  this.$nextTick(() => {
    if (this.$refs['search-input']) {
      setTimeout(() => {
        this.$refs['search-input'].blur()
      }, 300)
    }
  })
},

If you encounter a similar issue, try implementing the code like this:

toggle(e) {
  if (e.key == 'g') {
    this.visible = !this.visible;
    setTimeout(() => { this.$refs.cInput.focus() }, 300)
  }
}

Answer 5

Answer №3

If you're working with Vue3 and need to focus on an input box from inside a component, setting up a transition is the best approach. Within the transition, look out for the @after-enter event. This event will be triggered after the animation transition on enter is completed, ensuring that your component shows up correctly.

For those facing issues with the code snippet below:

  ***this.$nextTick(() => this.$refs.searchinput.focus());***

If this code isn't functioning as expected, it could be because the initial focus remains on the parent element or the input element hasn't been displayed yet. Placing this code in the mounted hook means it only executes once, regardless of how many times the component is shown/hidden using v-if or v-show.

To resolve this issue, consider implementing the following solution:

<template>
   <transition name="bounce" @after-enter="afterEnter" > ;
     <div>
         <input type="text" ref="searchinput" />
     </div>
   </transition>
</template>

<script>
methods: {
       afterEnter() {
            setTimeout(() => {
                
                this.$refs.searchinput.focus();
                
            }, 200);
        },
}
</script>

Answer 6

If you're working with Vue3 and need to focus on an input box from inside a component, setting up a transition is the best approach. Within the transition, look out for the @after-enter event. This event will be triggered after the animation transition on enter is completed, ensuring that your component shows up correctly.

For those facing issues with the code snippet below:

  ***this.$nextTick(() => this.$refs.searchinput.focus());***

If this code isn't functioning as expected, it could be because the initial focus remains on the parent element or the input element hasn't been displayed yet. Placing this code in the mounted hook means it only executes once, regardless of how many times the component is shown/hidden using v-if or v-show.

To resolve this issue, consider implementing the following solution:

<template>
   <transition name="bounce" @after-enter="afterEnter" > ;
     <div>
         <input type="text" ref="searchinput" />
     </div>
   </transition>
</template>

<script>
methods: {
       afterEnter() {
            setTimeout(() => {
                
                this.$refs.searchinput.focus();
                
            }, 200);
        },
}
</script>

Having trouble getting Vue to properly focus on an input field

Answer №1

Answer №2

Answer №3

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