<body>
<div class="app">
<todo-list></todo-list>
{{message}}--{{message+','+message}}
<div :id='message' v-if="showMessage">{{title}}</div>
<div v-else style="text-decoration: line-through;">{{title}}--{{title}}</div>
<div :id='message' v-show="showMessage">{{title}}</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
Vue.component('todo-item', {
props: {
title: String,
prize: {
type: Number,
default: 40
}
},
template: `<li>
<button @click="handleClick">delete< / The Button>
Course Name: {{title}}
Price: {{}} Prize
< / li> `,
the Data: function () {
return {}
},
Methods: {
// button click event
handleClick () {
Console. log ( " the handleClick " );
// transmitted to the parent component this.title @delete event parameters, delete (var) {} to receive this parameter within parent components
the this $ EMIT (. ' Delete ' , the this .title );
}
}
})
Vue.component('todo-list', {
template: `
<ul>
<todo-item @delete="handleDelete" v-for="item in classList" :title="item.title" :prize="item.prize"></todo-item>
</ul>
`,
methods:{
//@delete对应的事件
handleDelete(val){
console.log("handleDelete",val);
}
},
data: function () {
return {
classList: [
{
title: '课程1',
prize: 50
},
{
title: '课程2',
prize: 80
}
]
}
}
})
var vm = new Vue({
el: '.app',
data: {
message: 'hello world',
showMessage: false,
title: "是否删除",
}
})
</script>
</body>