Handle key press by function in VueJs

问题

in my component I am using VueStrap's modal like this:

<template>
    <modal-window v-model="show" v-on:keyup="keyHandler($event)" @ok="submit()" @cancel="cancel()" @closed="close()" ... >
       ...
    </modal-window>
 ...
</template>
<script> 
    ...
    methods: {
       keyHandler (event) {
           console.log(event);
       }
    },...
</script>

I want handle key press when that modal is opened and ensure submit modal when enter pressed or close modal when esc pressed.

I added custom function keyHandler which is unfortunately never fired. Can you tell me how to fix code to handle key press in that function? Or when is better way how to close and submit vue strap modal I will be grateful for advice. Thank you.

回答1:

You can attach your event handler to window, that way you can receive all key events and act accordingly depending on your modal's state:

Vue.component('modal', {
  template: '<div>test modal</div>',
});

new Vue({
  el: "#app",
  created() {
    window.addEventListener('keydown', (e) => {
      if (e.key == 'Escape') {
        this.showModal = !this.showModal;
      }
    });
  },
  data: {
    showModal: true
  }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.16/vue.min.js"></script>
<div id="app">
  <modal v-show="showModal"></modal>
</div>

来源：https://stackoverflow.com/questions/50395674/handle-key-press-by-function-in-vuejs