将文件上传到HTML表单,重命名,然后将文件返回给用户 [英] Upload file to HTML form, rename it, and return file to user
问题描述
希望构建一个小的JavaScript Web工具来重命名文件,而无需将它们发送到服务器。理想情况下,我想将文件上传到表单, input type =file
或 DataTransfer
(拖放),然后运行脚本来更改 file.name
,然后将重命名的文件呈现给用户,所有客户端。
Looking to build a little JavaScript web tool to rename files without needing to send them to a server. Ideally, I'd like to upload a file to a form, to either input type="file"
or DataTransfer
(drag/drop), then run a script to change the file.name
, then present the renamed file to the user, all client side.
这可能吗?我知道如何重命名文件,但如何让用户保存新文件而不将其发送到服务器?
Is this possible? I know how to rename the files, but how to let the user save the new file without sending it to a server?
谢谢!
推荐答案
试试这个
如果你想要多个或拖放,只需编辑它
if you want multiple or drag and drop, just edit it
<input type="file" id="files" name="files"/>
<input type="text" id="newname"> <button>rename</button>
<div id="output"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(function(){
$('button').click(function(){
renameFile($('#files')[0].files[0], a.files.type, $('#newname').val());
});
function renameFile(file, typeFile, newname) {
var reader = new FileReader();
reader.onload = function(event) {
$('#output').append('<a href="data:'+ typeFile +';,'+ encodeURI(event.target.result) +'" download="'+newname+'">'+newname+'</a>');
}
reader.readAsBinaryString(file);
}
});
</script>
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