vue 监控enter键触发

<input v-on:keyup.enter="submit">//局部

//全局
methods: {    
    handleKeyDown(e) {
      let key = null;
      if (window.event === undefined) {
        key = e.keyCode;
      } else {
        key = window.event.keyCode;
      }
      if (key === 13) {
        //触发的事件
        this.onSubmit();
      }
    },
  },
  created() {
    window.addEventListener("keydown", this.handleKeyDown, true); //开启监听键盘按下事件
  },

 全局添加时，离开本页面时要取消监听

destroyed() {
    window.removeEventListener("keydown", this.handleKeyDown, true);
  },