（1）全局注册
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<title>Vue</title>
</head>
<body>
<div id="app">
<my-component>
</my-component>
</div>
<script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script>
<script type="text/javascript">
//示例前注册
Vue.component('my-component', { //DOM结构必须被元素包含
template: '<div>组件内容</div>' }) new Vue({ el: "#app" }) </script>
</body>
</html>
（2）局部注册
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<title>Vue</title>
</head>
<body>
<div id="app">
<my-component>
</my-component>
</div>
<script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script>
<script type="text/javascript">
var Child = { template: '<div>组件内容</div>' } new Vue({ el: "#app", components: { 'my-component': Child } }) </script>
</body>
</html>
（3）is挂载组件
table、ul、ol、select这些标签会限制其内的元素，这时可以使用is来挂载组件
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<title>Vue</title>
</head>
<body>
<div id="app">
<table>
<tbody is='my-component'>
</tbody>
</table>
</div>
<script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script>
<script type="text/javascript">
//示例前注册
Vue.component('my-component', { //DOM结构必须被元素包含
template: '<div>组件内容</div>' }) new Vue({ el: "#app" }) </script>
</body>
</html>
（4）组件也可以有data，method，computed等属性。但是data是函数，数据需要return出去。
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<title>Vue</title>
</head>
<body>
<div id="app">
<my-component></my-component>
</div>
<script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script>
<script type="text/javascript">
//示例前注册
Vue.component('my-component', { //DOM结构必须被元素包含
template: '<div>{{message}}</div>', data: function() { return { message: '组件内容' } } }) new Vue({ el: "#app" }) </script>
</body>
</html>
（5）解决多个组件之间数据共享问题
给组件返回一个新的data对象
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<title>Vue</title>
</head>
<body>
<div id="app">
<my-component></my-component>
<my-component></my-component>
<my-component></my-component>
</div>
<script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script>
<script type="text/javascript">
//示例前注册
Vue.component('my-component', { //DOM结构必须被元素包含
template: '<button @click="counter++">{{counter}}</button>', data: function() { return { counter: 0 } } }) new Vue({ el: "#app" }) </script>
</body>
</html>
（6）props传递数据、events触发事件和slot内容分发构成Vue组件的3个API来源。