我使用vue2.0进行下面的设置。调用some()方法,更新父级的“位置”。我希望孩子注意更改位置,并在更新时做出相应的反应。但是,从不调用孩子的监视方法。请问这里有什么问题吗?
谢谢,
// parent
import home from './components/home.vue'
var App = window.App = new Vue({
data: {
place: '',
},
methods: {
something: function(event) {
this.place = 'some new place'
})
},
components: {
'home': home,
}
}).$mount('#app')
// child ('./components/home.vue')
export default {
props: ['place'],
// need to react here when place changes
watch: {
place: function (val, oldVal) {
console.log('new: %s, old: %s', val, oldVal)
},
}
答案 0 :(得分:0)
你是否将地方道具传递给组件?
这是一个工作片段:
var home = {
props: ['place'],
template: '<div>home: {{ place }}</div>',
watch: {
place: function (val, oldVal) {
console.log('new: %s, old: %s', val, oldVal)
}
}
};
var App = new Vue({
el: '#app',
components: {
'home': home
},
data: {
place: 'somewhere'
},
methods: {
something: function(event) {
this.place = 'some new place'
}
}
});
&#13;
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<div id="app">
<button @click="something">set place</button>
<p>app: {{ place }}</p>
<home :place="place"></home>
</div>
&#13;