我想在上传某个文件时添加加载程序图标。如何将其设置为上次完成上传?
我有一个简单的上传表单,我想上传文档并单击“保存”按钮,然后加载程序应弹出并显示自己,直到文件上传。
<input type="file" (change)="AddFiles($event)" />
<button type="submit">Save</button>
TS:
addFiles(event: EventTarget) {
// this.file = [];
const eventObj: MSInputMethodContext = <MSInputMethodContext> event;
const target: HTMLInputElement = <HTMLInputElement> eventObj.target;
const files: FileList = target.files;
if (files.length !== 0) {
this.file = [];
this.file.push(files[0]);
this.uploadFlag = true;
} else {
this.uploadFlag = false;
}
}
这是添加文件的代码,我想要做的就是单击Save show loader直到完成。
答案 0 :(得分:0)
你可以这样做:
<div align="center" *ngIf="result?.length == 0">Waiting ...</div>
<div id="loader-home" align="center" *ngIf="result?.length == 0">
<div class="bounce1"></div>
<div class="bounce2"></div>
<div class="bounce3"></div>
</div>
每个反弹类代表一个气泡(用css调整以逐个反弹)
/* LOADER */
#loader-home {
display: flex;
align-items: center;
justify-content: center;
height: 100%; }
#loader-home > div {
width: 18px;
height: 18px;
background-color: black;
border-radius: 100%;
display: inline-block;
-webkit-animation: sk-bouncedelay 1.4s infinite ease-in-out both;
animation: sk-bouncedelay 1.4s infinite ease-in-out both; }
#loader-home .bounce1 {
animation-delay: -0.32s; }
#loader-home .bounce2 {
animation-delay: -0.16s; }
#loader-home .bounce3 {
animation-delay: -0.08s; }
“result”变量是您的observable
的结果 this.data.import(uploadResult)
.map((res: any) => res.errorMessage)
.subscribe(result => {
this.result = result;
...}