从外部javascript访问Vue组件范围

时间:2018-05-30 19:13:23

标签: vue.js vuejs2 vue-component

我可以从外部JavaScript访问Vue组件数据属性和方法吗?我正在尝试创建一个混合应用程序,其中屏幕的一部分是Vue组件,我想在单击由纯js处理的按钮时调用该组件内的方法。有没有办法实现这个目标?

谢谢!

2 个答案:

答案 0 :(得分:3)

是。您需要将Vue对象分配给变量(即vue),然后才能访问vue.methodName()vue.propertyName



// add you new Vue object to a variable
const vue = new Vue({
  el: "#app",
  data: {
    todos: [
      { text: "Learn JavaScript", done: false },
      { text: "Learn Vue", done: false },
      { text: "Play around in JSFiddle", done: true },
      { text: "Build something awesome", done: true }
    ]
  },
  methods: {
  	toggle: function(todo){
    	todo.done = !todo.done
    }
  }
});

// Add event listener to outside button
const button = document.getElementById('outsideButton');
button.addEventListener('click', function() {
	vue.toggle(vue.todos[1]);
});

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

li {
  margin: 8px 0;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}

del {
  color: rgba(0, 0, 0, 0.3);
}

<script src="https://unpkg.com/vue@2.5.16/dist/vue.min.js"></script>
<div id="app">
  <h2>Todos:</h2>
  <ol>
    <li v-for="todo in todos">
      <label>
        <input type="checkbox"
          v-on:change="toggle(todo)"
          v-bind:checked="todo.done">

        <del v-if="todo.done">
          {{ todo.text }}
        </del>
        <span v-else>
          {{ todo.text }}
        </span>
      </label>
    </li>
  </ol>
</div>
<div class="outside">
  <button id="outsideButton">
    Click outside button
  </button>
</div>
&#13;
&#13;
&#13;

答案 1 :(得分:0)

是的,您可以向Vue组件添加一个事件侦听器,用于侦听按钮单击事件。请参见示例here on codepen

JS

new Vue({
  el: '#app',
    methods: {
        clickMethod(event){
            if (event.target.id === 'outsideButton') {
                alert('button clicked')
            }
        }
    },
    created(){
        let localThis = this 
        document.addEventListener('click', this.clickMethod)
    }
})

HTML

<div>
    <button id="outsideButton">Button</button>
    <div id="app">
    </div>
</div>