Javascript Vue 2:无法从组件中找到单击事件的方法

在我的vue应用程序中，我正在调用位于组件中的单击事件函数。以下是组件代码：

Vue.component( 'new-board', {
  template: `
    <div>
      <br/>
      <div class="panel panel-primary">
        <div class="panel-heading">
          Create New Board
        </div>
        <div class="panel-body">
          <input class="form-control" placeholder="Board Name"/>
          <button 
            style="margin-top: 5px;" 
            @click.stop="addBoard"
            class="btn btn-success btn-xs btn-block"
          >
            Add Board
          </button>
        </div>
      </div>
    </div>
  `
} )

现在，当我单击上面组件中的

添加电路板

按钮时，它显示此错误：

未捕获引用错误：未定义addBoard 单击时（在Xr（vue.min.js:7）处求值）：2:455） 在HTMLButtonElement.invoker上（vue.min.js:6）

组件中的按钮似乎找不到写入同一文件的

addBoard

方法！ 我在这里缺少什么？

试试：

Vue.component( 'new-board', {
  template: `
    <div>
      <br/>
      <div class="panel panel-primary">
        <div class="panel-heading">
          Create New Board
        </div>
        <div class="panel-body">
          <input class="form-control" placeholder="Board Name"/>
          <button 
            style="margin-top: 5px;" 
            @click.stop="addBoard"
            class="btn btn-success btn-xs btn-block"
          >
            Add Board
          </button>
        </div>
      </div>
    </div>
  `,
  methods: {
    addBoard: function(){ console.log('add board');}
  }
} )

Vue.component（'new board'{
模板：`


创建新板
添加板
`,
方法：{
addBoard:function（）{console.log（'addBoard'）；}
}
} )

此处有一些更改，如果要与不相关的组件共享事件，则必须使用新的vue实例触发这些事件并侦听。因此，根据您的代码，这应该会有所帮助

window.Event = new Vue();

Vue.component( 'new-board', {
  template: `
    <div>
      <br/>
      <div class="panel panel-primary">
        <div class="panel-heading">
          Create New Board
        </div>
        <div class="panel-body">
          <input class="form-control" placeholder="Board Name"/>
          <button 
            style="margin-top: 5px;" 
            @click.stop="addBoard" // keep this as the name of the local method
            class="btn btn-success btn-xs btn-block">
            Add Board
          </button>
        </div>
      </div>
    </div>
  `,
   methods:{
        addBoard(){
             // fire the event, also you can add any params
             Event.$emit('callAddBoard',data)
        }
   }
} )

---

据我所知，这是可行的，您可以向任何组件发送事件，而无需通过主实例。

组件无法直接调用父Vue上定义的方法。您需要在组件上定义addBoard。

window.Event = new Vue();

Vue.component( 'new-board', {
  template: `
    <div>
      <br/>
      <div class="panel panel-primary">
        <div class="panel-heading">
          Create New Board
        </div>
        <div class="panel-body">
          <input class="form-control" placeholder="Board Name"/>
          <button 
            style="margin-top: 5px;" 
            @click.stop="addBoard" // keep this as the name of the local method
            class="btn btn-success btn-xs btn-block">
            Add Board
          </button>
        </div>
      </div>
    </div>
  `,
   methods:{
        addBoard(){
             // fire the event, also you can add any params
             Event.$emit('callAddBoard',data)
        }
   }
} )

var boardItem = new Vue( {
  el: "#board-item",
  data: {
    boards: [
      { name: 'learning vue 2' }
    ],
    newBoard: [],
    viewNewBoard: true
  },
  methods: {
    displayNewBoard: function() {
      event.preventDefault()
      if( this.viewNewBoard == false ) {
        this.viewNewBoard = true
      } else {
        this.viewNewBoard = false
      }
    },
    addBoard: function() {
      console.log( 'add board' )
    }
  },

   created(){
         // here you listen and excute the remote event from component, and apply a local method.
         Event.$on('callAddBoard', this.addBoard)
   }
} )