以自定義下載loading為例
1.首先創建自定義組件文件

2.編輯下載loading自定義組件中的內容
<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,已用時 {{ 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>
取消下載
</el-button>
</div>
</el-dialog>
</div>
</template>
<script>
export default {
name: 'downloadDialog',
props: {
downloadLoading: {
default: false
},
downloadOver: {
default: false
}
},
data() {
return {
// 下載 - 已耗時
takedTime: 0,
// 下載 - 百分比
percentage: 0,
// 下載 - 計時器
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.$confirm(`文件正在生成中, 是否取消下載?`, '取消下載', {
confirmButtonText: '取消下載',
cancelButtonText: '繼續下載',
type: 'warning'
}).then(() => {
clearInterval(this.downloadTimer);
this.$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-width: 100vw;
box-sizing: border-box;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
h3 {
text-align: center;
margin-bottom: 20px;
}
}
&-progress {
width: 500px;
display: flex;
.el-progress {
flex: 1;
}
.el-button {
margin-left: 10px;
}
}
}
</style>
3.編輯 downloadDialog 中index.js中的內容
// 引入組件 import DownloadDialogLoading from './index.vue'; // 自定義組件對象 const DownloadDialog = { // install 是默認的方法。當外界在 use 這個組件的時候,就會調用本身的 install 方法,同時傳一個 Vue 這個類的參數 install: function(Vue) { // Vue.component() 與正常的全局注冊組件用法相同,可以理解為通過 install 和 Vue.use()函數注冊了全局組件 Vue.component('DownloadDialog', DownloadDialogLoading); } } // 導出 export default DownloadDialog;
4.在main.js中導入使用
// 全局引入自定義下載 loading import DownloadDialog from '@/components/DownloadDialog/index.js'; Vue.use(DownloadDialog);
5.在組件中直接使用
這里使用不需要導入,注冊
1.導入:import DownloadDialog from '@/components/DownloadDialog/index.vue'
2.注冊:components: {
DownloadDialog
}
<template> <div class="home"> <!-- 下載進度提示 --> <DownloadDialog @cancelDownload="cancelDownload" :downloadOver="downloadOver" :downloadLoading="downloadLoading" ></DownloadDialog> </div> </template>
