Identifying keystrokes and triggering audio in Vue.js

Utilizing vue.js, the code snippet provided enables sound playback upon each button click.

I am curious about how one can detect a keyboard press event to play a sound when the DOM is ready rather than waiting for button clicks.

For instance, triggering sound on pressing Enter key:

v-on:keyup.13="playSound('path/to/mp3')"

While Vue documentation mainly focuses on HTML attributes, I believe implementing this functionality may involve JavaScript. As a beginner in Vue.js, I'm still learning.

You can find more information on Event Modifiers in the Vue.js documentation here.

Check out the codepen example.

new Vue({
  el: '#app',
  data: {
    text: ''
  },
  methods: {
    playSound (sound) {
      if(sound) {
        var audio = new Audio(sound);
        audio.play();
      }
    }
  }
});

Answer №1

When a key is pressed, the keyboard event originates from the active element and then bubbles up. To handle all key presses regardless of the focused element, you will need to manually register the listener in your code on, for example, document.

new Vue({
  el: '#app',
  created() {
    this.onKeyDown = this.onKeyDown.bind(this);
    document.addEventListener('keydown', this.onKeyDown);
  },
  destroyed() {
    document.removeEventListener('keydown', this.onKeyDown);
  },
  methods: {
    playSound (sound) {
      if(sound) {
        var audio = new Audio(sound);
        audio.play();
      }
    },
    onKeyDown(e) {
      switch (e.keyCode) {
        case 65: this.playSound(sound1); break; // 'a' key
        case 66: this.playSound(sound2); break; // 'b' key
      }
    },
  }
});

Codepen

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