单击图标打开文件资源管理器 [英] Opening file explorer on click of icon

问题描述

我正在将Angular 5与Typescript一起使用.我需要打开文件浏览器窗口，以在单击图标时添加附件.现在，我知道如何为按钮执行此操作，但是某种程度上它似乎不适用于图标，也许单击事件绑定不起作用.请帮忙吗?

I am using Angular 5 with Typescript. I need to open the file explorer window to add an attachment on clicking an icon. Now, i know how to do this for a button but somehow it does not seem to be working for icon, maybe the click event binding is not working. A little help please?

<input type="file" #file (change)="upload()"/>
<span class="icon-doc" (click)="file.click()">
</span>

在我的组件中:

upload(){
    //The functionality to upload file(s)
}

推荐答案

我不确定代码的编写方式如何，但是您需要将该图标绑定到click方法，该方法实际上将以编程方式单击其他 input 元素.这是您可以做到的一种方法:

I am not sure how exactly your code is written, but you will need to bind that icon to a click method, which will actually programatically click the other input element that handles the attaching of files. This is one way you can do it:

<a (click)="handleClick()" href="javascript:undefined">
  <i class="la la-upload"></i>
</a>

<input class="hidden" type="file" id="upload-file" name="upload-file" accept=".csv" ngf-max-size="2MB" (change)="addAttachment($event)">

您可能希望使用CSS隐藏输入按钮:

You will probably want to hide the input button using CSS:

.hidden {
  visibility: hidden;
  width: 1px;
  height: 1px;
}

在您的component.ts上，

And on your component.ts,

handleClick() {
  document.getElementById('upload-file').click();
}

addAttachment(fileInput: any) {
  const fileReaded = fileInput.target.files[0];
  //  handle the rest 
}

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