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!
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()
和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;
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>