动态组件：不同组件之间进行动态切换，通过 Vue 的 元素加一个特殊的 is attribute 实现

1. 基础使用

component 的 is 属性值是组件名，就可以调用该组件

<component is="comb"></component>

<div id="app">
<component is="comb"></component>
</div>

<script>
var coma = {
template: '<div>aaaa</div>'
}
var comb = {
template: '<div>bbbb</div>'
}
let vm = new Vue({
el: '#app',
components: {
coma: coma,
comb: comb,
}
})
</script>

2. 动态调用组件示例

<div id="app">
<button @click="changeComponent('coma')">coma</button>
<button @click="changeComponent('comb')">comb</button>
<button @click="changeComponent('comc')">comc</button>

<component :is="com_name"></component>
</div>

<script>
var coma = {
template: '<div>aaaa</div>'
}
var comb = {
template: '<div>bbbb</div>'
}
var comc = {
template: '<div>cccc</div>'
}
let vm = new Vue({
el: '#app',
data: {
com_name: 'coma'
},
components: {
coma: coma,
comb: comb,
comc: comc,
},
methods: {
changeComponent: function(name) {
this.com_name = name
}
}
})
</script>

代码效果