I've an upload form I would like to populate with a file, in particular an image.
我有一个上传表单，我想填充一个文件，特别是一个图像。
My understanding is that I need to create a File object to put in the FileList of the relative form. Currently the image I have is in the data URI format "data:image/png;base64,..." but I can change that.
我的理解是我需要创建一个File对象来放入相对表单的FileList。目前我的图像是数据URI格式“data：image / png; base64，...”但我可以改变它。
If that is true how do I create the correct File object from an image and add it to the FileList? If it is not do you suggest a better solution?
如果确实如此，如何从图像创建正确的File对象并将其添加到FileList？如果不是，你建议一个更好的解决方案？
1 个解决方案
#1
4
Use a regular form and target it to an iframe with display set as none.
使用常规表单并将其定位到iframe，并将显示设置为none。
<form id="my_form" enctype="multipart/form-data" action="upload_handler.php" method="POST" target="upload_target">
<input name="uploadfile" type="file" />
<input type="submit" value="Upload File" />
</form>
<iframe id="upload_target" name="upload_target" style="display:none;"></iframe>
#1
4
Use a regular form and target it to an iframe with display set as none.
使用常规表单并将其定位到iframe，并将显示设置为none。
<form id="my_form" enctype="multipart/form-data" action="upload_handler.php" method="POST" target="upload_target">
<input name="uploadfile" type="file" />
<input type="submit" value="Upload File" />
</form>
<iframe id="upload_target" name="upload_target" style="display:none;"></iframe>