在项目开发中，我们总会引入很多别人封装好的组件模板，使用时仅仅三步，第一步就是install,第二步在main.js里面引入，第三步Vue.use这个组件。例如MintUI，试想我们是否可以自己仿照MintUI写一个自己的组件同样让别人使用，设置成全局组件呢？下面就依照MintUI编写自己的组件库。
1. 创建组件模板
image
如上图，创建了两个组件模板Loading和MyButton，组件模板代码以Loading为 ：
代码语言：javascript复制//Loading组件模板
<template>
<transition name="mint-indicator">
<div class="mint-indicator" v-show="visible">
<div class="mint-indicator-wrapper" :style="{ 'padding': text ? '20px' : '15px' }">
<div class="loader">
<div class="loader-inner ball-spin-fade-loader">
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</div>
</div>
<!--<spinner class="mint-indicator-spin" :type="convertedSpinnerType" :size="32"></spinner>-->
<span class="mint-indicator-text" v-show="text">{{ text }}</span>
</div>
<div class="mint-indicator-mask" @touchmove.stop.prevent></div>
</div>
</transition>
</template>
<script>
export default {
name: 'Loading',
data(){
return{
visible:true,
text:'加载中'
}
}
}
</script>
<style scoped>
.mint-indicator {
-webkit-transition: opacity .2s linear;
transition: opacity .2s linear;
}
.mint-indicator-wrapper {
top: 50%;
left: 50%;
position: fixed;
-webkit-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
border-radius: 5px;
background: rgba(0, 0, 0, 0.4);
color: lightgray;
box-sizing: border-box;
text-align: center;
border: 1px solid lightgray;
}
.mint-indicator-text {
display: block;
color: white;
text-align: center;
font-size: 16px;
}
.mint-indicator-spin {
display: inline-block;
text-align: center;
}
.mint-indicator-mask {
top: 0;
left: 0;
position: fixed;
width: 100%;
height: 100%;
opacity: 0;
background: transparent;
}
.mint-indicator-enter, .mint-indicator-leave-active {
opacity: 0;
}
.loader{
width:30px;
height: 30px;
margin-left: 20px;
}
@keyframes ball-spin-fade-loader {
50% {
opacity: 0.3;
-webkit-transform: scale(0.4);
transform: scale(0.4); }
100% {
opacity: 1;
-webkit-transform: scale(1);
transform: scale(1); } }
.ball-spin-fade-loader {
position: relative; }
.ball-spin-fade-loader > div:nth-child(1) {
top: 10px;
left: 0;
-webkit-animation: ball-spin-fade-loader 1s 0s infinite linear;
animation: ball-spin-fade-loader 1s 0s infinite linear; }
.ball-spin-fade-loader > div:nth-child(2) {
top: 7.04545px;
left: 7.04545px;
-webkit-animation: ball-spin-fade-loader 1s 0.12s infinite linear;
animation: ball-spin-fade-loader 1s 0.12s infinite linear; }
.ball-spin-fade-loader > div:nth-child(3) {
top: 0;
left: 10px;
-webkit-animation: ball-spin-fade-loader 1s 0.24s infinite linear;
animation: ball-spin-fade-loader 1s 0.24s infinite linear; }
.ball-spin-fade-loader > div:nth-child(4) {
top: -7.04545px;
left: 7.04545px;
-webkit-animation: ball-spin-fade-loader 1s 0.36s infinite linear;
animation: ball-spin-fade-loader 1s 0.36s infinite linear; }
.ball-spin-fade-loader > div:nth-child(5) {
top: -10px;
left: 0;
-webkit-animation: ball-spin-fade-loader 1s 0.48s infinite linear;
animation: ball-spin-fade-loader 1s 0.48s infinite linear; }
.ball-spin-fade-loader > div:nth-child(6) {
top: -7.04545px;
left: -7.04545px;
-webkit-animation: ball-spin-fade-loader 1s 0.6s infinite linear;
animation: ball-spin-fade-loader 1s 0.6s infinite linear; }
.ball-spin-fade-loader > div:nth-child(7) {
top: 0;
left: -10px;
-webkit-animation: ball-spin-fade-loader 1s 0.72s infinite linear;
animation: ball-spin-fade-loader 1s 0.72s infinite linear; }
.ball-spin-fade-loader > div:nth-child(8) {
top: 7.04545px;
left: -7.04545px;
-webkit-animation: ball-spin-fade-loader 1s 0.84s infinite linear;
animation: ball-spin-fade-loader 1s 0.84s infinite linear; }
.ball-spin-fade-loader > div {
background-color: white;
width: 7px;
height: 7px;
border-radius: 100%;
margin: 2px;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
position: absolute; }
</style>2. 在组件加载入口的index.js文件里面添加install方法
代码语言：javascript复制import LoadingComponent from './Loading'
import myButton from './MyButton'
const Loading = {
install: function (Vue) {
Vue.component('Loading', LoadingComponent)
}
}
const MyButton = {
install: function (Vue) {
Vue.component('MyButton', myButton)
}
}
// 导出组件
export {
Loading,
MyButton
}注：上面我引入了两个组件，也可以引入更多组件，如果只有一个组件时，我们用export default，两个或多个时用export {}的方法。
3. webpack首先会加载main.js，所以在main的js里面引入
代码语言：javascript复制import MintUI from 'mint-ui'
Vue.use(MintUI)
import {Loading,MyButton} from "./components/loading/index"
Vue.use(Loading)
Vue.use(MyButton)注：用export default引入时，只需要用上面import MintUI from 'mint-ui'方式，如果用export引入，只能时import {Loading,MyButton}的形式。
4. 使用组件
代码语言：javascript复制<template>
<div>
<Loading></Loading>
<MyButton></MyButton>
</div>
</template>5. 渲染后的效果图：
image
在此提醒注意引入路径问题，./表示当前目录 ../表示父级目录。
