以自定义下载loading为例
1.首先创建自定义组件文件

2.编辑下载loading自定义组件中的内容
<template>
<div>
<el-dialog
fullscreen
modal-append-to-body
custom-class="data-download"
:visible="downloadLoading"
:show-close="false"
>
<h3>文件正在生成中,已用时 {{ takedTime }} s...</h3>
<div class="data-download-progress">
<el-progress
text-inside
:stroke-width="28"
:percentage="downloadOver ? 100 : percentage"
></el-progress>
<el-button @click="cancelDownload" size="mini" type="warning" round>
取消下载
</el-button>
</div>
</el-dialog>
</div>
</template>
<script>
export default {
name: 'downloadDialog',
props: {
downloadLoading: {
default: false
},
downloadOver: {
default: false
}
},
data() {
return {
// 下载 - 已耗时
takedTime: 0,
// 下载 - 百分比
percentage: 0,
// 下载 - 计时器
downloadTimer: ''
};
},
created() {},
watch: {
downloadLoading() {
if (this.downloadLoading) {
this.takedTime = 0;
this.percentage = 0;
this.downloadTimer = setInterval(() => {
this.takedTime++;
if (this.percentage < 99) this.percentage += 2;
if (this.percentage > 99) this.percentage = 99;
}, 1000);
} else {
clearInterval(this.downloadTimer);
}
}
},
methods: {
cancelDownload() {
this.$confirm(`文件正在生成中, 是否取消下载?`, '取消下载', {
confirmButtonText: '取消下载',
cancelButtonText: '继续下载',
type: 'warning'
}).then(() => {
clearInterval(this.downloadTimer);
this.$emit('cancelDownload');
});
}
}
};
</script>
<style lang="scss">
.data-download {
background-color: rgba(255, 255, 255, 0.8) !important;
display: flex;
align-items: center;
justify-content: center;
.el-dialog__header {
display: none;
}
.el-dialog__body {
height: 100%;
max- 100vw;
box-sizing: border-box;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
h3 {
text-align: center;
margin-bottom: 20px;
}
}
&-progress {
500px;
display: flex;
.el-progress {
flex: 1;
}
.el-button {
margin-left: 10px;
}
}
}
</style>
3.编辑 downloadDialog 中index.js中的内容
// 引入组件 import DownloadDialogLoading from './index.vue'; // 自定义组件对象 const DownloadDialog = { // install 是默认的方法。当外界在 use 这个组件的时候,就会调用本身的 install 方法,同时传一个 Vue 这个类的参数 install: function(Vue) { // Vue.component() 与正常的全局注册组件用法相同,可以理解为通过 install 和 Vue.use()函数注册了全局组件 Vue.component('DownloadDialog', DownloadDialogLoading); } } // 导出 export default DownloadDialog;
4.在main.js中导入使用
// 全局引入自定义下载 loading import DownloadDialog from '@/components/DownloadDialog/index.js'; Vue.use(DownloadDialog);
5.在组件中直接使用
这里使用不需要导入,注册
1.导入:import DownloadDialog from '@/components/DownloadDialog/index.vue'
2.注册:components: {
DownloadDialog
}
<template> <div class="home"> <!-- 下载进度提示 --> <DownloadDialog @cancelDownload="cancelDownload" :downloadOver="downloadOver" :downloadLoading="downloadLoading" ></DownloadDialog> </div> </template>