How to Shift Focus to a Component in Vue.js

Question

How to Shift Focus to a Component in Vue.js

Within a container, I have a form section enclosed by a component that remains hidden due to the use of v-if. Upon clicking a button, the boolean value is toggled, revealing the previously concealed component. At this point, I aim to shift focus to the initial input field within the form.

I attempted utilizing aria-live without success. It seems that the single-page application (SPA) structure might be hindering the proper registration of these live regions - indicating they need to be registered during page rendering and are less responsive when dynamically injected into the DOM. Although unconfirmed, this speculation led me to assign a class to the target input and attempt to utilize HTMLElement.focus().

document.querySelector('.focus')[0].focus();

Unfortunately, this approach also proved ineffective. Is there an explanation for why I am encountering difficulties focusing on an element that has been recently added to the visible page content?

javascript vue.js focus aria-live

Answer 1

Answer №1

To enhance your form component functionality, it is essential to establish a defined behavior for when it is mounted:

Vue.config.productionTip = false;
const template = `<div>
    <div>
      <inner v-if="showInner" />   
      <button @click="toggle">Toggle inner component</button>
    </div>
</div>`
const inner = {
  name: 'inner',
  template: '<form><input ref="textInput" type="text"/></form>',
  mounted() {
    this.$refs.textInput.focus()
  }
};
new Vue({
  template,
  data: function() {
    return {
      showInner: false
    };
  },
  methods: {
    toggle() {
      this.showInner = !this.showInner;
    }
  },
  components: {
    inner
  }
}).$mount("#app");

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app"></div>

Answer 2

To enhance your form component functionality, it is essential to establish a defined behavior for when it is mounted:

Vue.config.productionTip = false;
const template = `<div>
    <div>
      <inner v-if="showInner" />   
      <button @click="toggle">Toggle inner component</button>
    </div>
</div>`
const inner = {
  name: 'inner',
  template: '<form><input ref="textInput" type="text"/></form>',
  mounted() {
    this.$refs.textInput.focus()
  }
};
new Vue({
  template,
  data: function() {
    return {
      showInner: false
    };
  },
  methods: {
    toggle() {
      this.showInner = !this.showInner;
    }
  },
  components: {
    inner
  }
}).$mount("#app");

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app"></div>

How to Shift Focus to a Component in Vue.js

Answer №1

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