vue 怎样亲手撸一个loading全局组件
作者：
秒速五厘米
文章简介：
vue 怎样亲手撸一个loading全局组件
1、首先建立一个 loading.vue 文件
<template>
<div class="">
<div class="ajax-loading load-status" v-show="showLoading">
<div></div>
<div>
<div>
<div></div>
<div></div>
</div>
</div>
</div>
<div class="ajax-toast load-status" v-show="showToast">
<div>
<div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</div>
</div>
</div>
</div>
</template>
<script>
export default {
data() {
return {
}
},
props: {
showLoading: false,
showToast: false
}
}
</script>
<style>
.loading-box{
background: #f5f5f5;
flex:1;
-webkit-flex:1;
height:100%;
}
.ajax-loading {
display: flex;
-webkit-display: flex;
flex-direction:column;
-webkit-flex-direction:column;
width: 100%;
height: 100%;
background-color: rgba(255,255,255,0);
position: fixed;
z-index:10;
}
.head-space {
height: 4.4rem;
}
.loading-box{
color: #f5514d !important;
}
.ajax-loading .la-square-jelly-box {
margin: -16px auto 0;
position: relative;
top: 50%;
}
.la-square-jelly-box,.la-square-jelly-box>div {
position: relative;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box
}
.la-square-jelly-box {
display: block;
font-size: 0;
color: #fff
}
.la-square-jelly-box.la-dark {
color: #333
}
.la-square-jelly-box>div {
display: inline-block;
float: none;
background-color: currentColor;
border: 0 solid currentColor
}
.la-square-jelly-box {
width: 32px;
height: 32px
}
.la-square-jelly-box>div:nth-child(1),.la-square-jelly-box>div:nth-child(2) {
position: absolute;
left: 0;
width: 100%
}
.la-square-jelly-box>div:nth-child(1) {
top: -25%;
z-index: 1;
height: 100%;
border-radius: 10%;
-webkit-animation: square-jelly-box-animate 0.6s -0.1s linear infinite;
-moz-animation: square-jelly-box-animate 0.6s -0.1s linear infinite;
-o-animation: square-jelly-box-animate 0.6s -0.1s linear infinite;
animation: square-jelly-box-animate 0.6s -0.1s linear infinite
}
.la-square-jelly-box>div:nth-child(2) {
bottom: -9%;
height: 10%;
background: #000;
border-radius: 50%;
opacity: .2;
-webkit-animation: square-jelly-box-shadow 0.6s -0.1s linear infinite;
-moz-animation: square-jelly-box-shadow 0.6s -0.1s linear infinite;
-o-animation: square-jelly-box-shadow 0.6s -0.1s linear infinite;
animation: square-jelly-box-shadow 0.6s -0.1s linear infinite
}
.la-square-jelly-box.la-sm {
width: 16px;
height: 16px
}
.la-square-jelly-box.la-2x {
width: 64px;
height: 64px
}
.la-square-jelly-box.la-3x {
width: 96px;
height: 96px
}
@-webkit-keyframes square-jelly-box-animate {
17% {
border-bottom-right-radius: 10%
}
25% {
-webkit-transform: translateY(25%) rotate(22.5deg);
transform: translateY(25%) rotate(22.5deg)
}
50% {
border-bottom-right-radius: 100%;
-webkit-transform: translateY(50%) scale(1, 0.9) rotate(45deg);
transform: translateY(50%) scale(1, 0.9) rotate(45deg)
}
75% {
-webkit-transform: translateY(25%) rotate(67.5deg);
transform: translateY(25%) rotate(67.5deg)
}
100% {
-webkit-transform: translateY(0) rotate(90deg);
transform: translateY(0) rotate(90deg)
}
}
@keyframes square-jelly-box-animate {
17% {
border-bottom-right-radius: 10%
}
25% {
-webkit-transform: translateY(25%) rotate(22.5deg);
-moz-transform: translateY(25%) rotate(22.5deg);
-o-transform: translateY(25%) rotate(22.5deg);
transform: translateY(25%) rotate(22.5deg)
}
50% {
border-bottom-right-radius: 100%;
-webkit-transform: translateY(50%) scale(1, 0.9) rotate(45deg);
-moz-transform: translateY(50%) scale(1, 0.9) rotate(45deg);
-o-transform: translateY(50%) scale(1, 0.9) rotate(45deg);
transform: translateY(50%) scale(1, 0.9) rotate(45deg)
}
75% {
-webkit-transform: translateY(25%) rotate(67.5deg);
-moz-transform: translateY(25%) rotate(67.5deg);
-o-transform: translateY(25%) rotate(67.5deg);
transform: translateY(25%) rotate(67.5deg)
}
100% {
-webkit-transform: translateY(0) rotate(90deg);
-moz-transform: translateY(0) rotate(90deg);
-o-transform: translateY(0) rotate(90deg);
transform: translateY(0) rotate(90deg)
}
}
@-webkit-keyframes square-jelly-box-shadow {
50% {
-webkit-transform: scale(1.25, 1);
transform: scale(1.25, 1)
}
}
@keyframes square-jelly-box-shadow {
50% {
-webkit-transform: scale(1.25, 1);
-moz-transform: scale(1.25, 1);
-o-transform: scale(1.25, 1);
transform: scale(1.25, 1)
}
}
/*!
* Load Awesome
*/
.ajax-toast {
width: 100%;
height: 100%;
background-color: rgba(255,255,255,0);
position: fixed;
z-index: 9;
}
.ajax-toast .toast {
height: 7rem;
width: 7rem;
background-color: rgba(0,0,0,0.5);
top: 50%;
left:50%;
margin-top: -3.5rem;
margin-left: -3.5rem;
padding-top: 1.8rem;
position: relative;
border-radius: 0.2rem;
}
.ajax-toast .la-line-spin-clockwise-fade {
margin: 0 auto;
position: relative;
text-align: center;
height:3.5rem;
width:3.5rem;
}
.la-line-spin-clockwise-fade,
.la-line-spin-clockwise-fade > div {
position: relative;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
.la-line-spin-clockwise-fade {
display: block;
font-size: 0;
color: #fff;
}
.la-line-spin-clockwise-fade.la-dark {
color: #333;
}
.la-line-spin-clockwise-fade > div {
display: inline-block;
float: none;
background-color: currentColor;
border: 0 solid currentColor;
}
.la-line-spin-clockwise-fade {
width: 32px;
height: 32px;
}
.la-line-spin-clockwise-fade > div {
position: absolute;
width: 3px;
height: 10px;
margin: 2px;
margin-top: -5px;
margin-left: -1px;
border-radius: 0;
-webkit-animation: line-spin-clockwise-fade 1s infinite ease-in-out;
-moz-animation: line-spin-clockwise-fade 1s infinite ease-in-out;
-o-animation: line-spin-clockwise-fade 1s infinite ease-in-out;
animation: line-spin-clockwise-fade 1s infinite ease-in-out;
}
.la-line-spin-clockwise-fade > div:nth-child(1) {
top: 15%;
left: 50%;
-webkit-transform: rotate(0deg);
-moz-transform: rotate(0deg);
-ms-transform: rotate(0deg);
-o-transform: rotate(0deg);
transform: rotate(0deg);
-webkit-animation-delay: -.875s;
-moz-animation-delay: -.875s;
-o-animation-delay: -.875s;
animation-delay: -.875s;
}
.la-line-spin-clockwise-fade > div:nth-child(2) {
top: 25.2512626585%;
left: 74.7487373415%;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
-webkit-animation-delay: -.75s;
-moz-animation-delay: -.75s;
-o-animation-delay: -.75s;
animation-delay: -.75s;
}
.la-line-spin-clockwise-fade > div:nth-child(3) {
top: 50%;
left: 85%;
-webkit-transform: rotate(90deg);
-moz-transform: rotate(90deg);
-ms-transform: rotate(90deg);
-o-transform: rotate(90deg);
transform: rotate(90deg);
-webkit-animation-delay: -.625s;
-moz-animation-delay: -.625s;
-o-animation-delay: -.625s;
animation-delay: -.625s;
}
.la-line-spin-clockwise-fade > div:nth-child(4) {
top: 74.7487373415%;
left: 74.7487373415%;
-webkit-transform: rotate(135deg);
-moz-transform: rotate(135deg);
-ms-transform: rotate(135deg);
-o-transform: rotate(135deg);
transform: rotate(135deg);
-webkit-animation-delay: -.5s;
-moz-animation-delay: -.5s;
-o-animation-delay: -.5s;
animation-delay: -.5s;
}
.la-line-spin-clockwise-fade > div:nth-child(5) {
top: 84.9999999974%;
left: 50.0000000004%;
-webkit-transform: rotate(180deg);
-moz-transform: rotate(180deg);
-ms-transform: rotate(180deg);
-o-transform: rotate(180deg);
transform: rotate(180deg);
-webkit-animation-delay: -.375s;
-moz-animation-delay: -.375s;
-o-animation-delay: -.375s;
animation-delay: -.375s;
}
.la-line-spin-clockwise-fade > div:nth-child(6) {
top: 74.7487369862%;
left: 25.2512627193%;
-webkit-transform: rotate(225deg);
-moz-transform: rotate(225deg);
-ms-transform: rotate(225deg);
-o-transform: rotate(225deg);
transform: rotate(225deg);
-webkit-animation-delay: -.25s;
-moz-animation-delay: -.25s;
-o-animation-delay: -.25s;
animation-delay: -.25s;
}
.la-line-spin-clockwise-fade > div:nth-child(7) {
top: 49.9999806189%;
left: 15.0000039834%;
-webkit-transform: rotate(270deg);
-moz-transform: rotate(270deg);
-ms-transform: rotate(270deg);
-o-transform: rotate(270deg);
transform: rotate(270deg);
-webkit-animation-delay: -.125s;
-moz-animation-delay: -.125s;
-o-animation-delay: -.125s;
animation-delay: -.125s;
}
.la-line-spin-clockwise-fade > div:nth-child(8) {
top: 25.2506949798%;
left: 25.2513989292%;
-webkit-transform: rotate(315deg);
-moz-transform: rotate(315deg);
-ms-transform: rotate(315deg);
-o-transform: rotate(315deg);
transform: rotate(315deg);
-webkit-animation-delay: 0s;
-moz-animation-delay: 0s;
-o-animation-delay: 0s;
animation-delay: 0s;
}
.la-line-spin-clockwise-fade.la-sm {
width: 16px;
height: 16px;
}
.la-line-spin-clockwise-fade.la-sm > div {
width: 1px;
height: 4px;
margin-top: -2px;
margin-left: 0;
}
.la-line-spin-clockwise-fade.la-2x {
width: 64px;
height: 64px;
}
.la-line-spin-clockwise-fade.la-2x > div {
width: 4px;
height: 20px;
margin-top: -10px;
margin-left: -2px;
}
.la-line-spin-clockwise-fade.la-3x {
width: 96px;
height: 96px;
}
.la-line-spin-clockwise-fade.la-3x > div {
width: 6px;
height: 30px;
margin-top: -15px;
margin-left: -3px;
}
/*
* Animation
*/
@-webkit-keyframes line-spin-clockwise-fade {
50% {
opacity: .2;
}
100% {
opacity: 1;
}
}
@keyframes line-spin-clockwise-fade {
50% {
opacity: .2;
}
100% {
opacity: 1;
}
}
</style>2、主要逻辑在index.js里完成
let loadTemp = require('./loading.vue ').default; // cli3.0以后引入vue模板需要default
let Load = {}; // 定义插件对象
Load.install = (Vue, options) => { //Vue的install方法，用于定义vue插件
// 如果存在loading 不重复创建DOM
if (document.getElementsByClassName('.load-status').length) return
// 创建一个VUE构造器
let lTemp = Vue.extend(loadTemp);
// 提供一个在页面上已存在的DOM元素作为Vue实例的挂载目标。
// 在实例挂载之后，可以通过$vm.$el访问。
// 如果这个选项在实例化时有用到，实例将立即进入编译过程。否则，需要显示调用vm.$mount()手动开启编译(如下)
// 提供的元素只能作为挂载点。所有的挂载元素会被vue生成的dom替换。因此不能挂载在顶级元素(html, body)上
// let $vm = new toastTpl({
// el: document.createElement('div')
// })
// 实例化VUE实例
let $vm = new lTemp();
// 此处使用$mount来手动开启编译。用$el来访问元素，并插入到body中
let tpl = $vm.$mount().$el;
document.body.appendChild(tpl);
Vue.prototype.$loading = { //在Vue的原型上添加实例方法，以全局调用
show(options) {
//通过传入props改变$vm下的属性控制组件 例如$vm.text = options
if (options == "loading") {
$vm.showLoading = true;
} else if (options == "toast") {
$vm.showToast = true;
}
},
hide() {
$vm.showLoading = false;
$vm.showToast = false;
}
}
}
//导出Load
export default Load;3、全局注册组件
//在你的main.js里通过以下方式引入组件 import Loading from '@/components/loading' //然后通过 USE方法全局注册 Vue.use(Loading);
4、全局调用
//最后恭喜你，现在可以全局调用loading组件啦！ this.$loading.show(options) //注意这里的this指向的是全局对象VUE this.$loading.hide(options)
链接：https://www.jianshu.com/p/af3137a9d5ac