我被这里的选项困住了。下面是我做的一个有效的方法:

<form>
 <input type="file">
 <button type="reset" id="file_reset" style="display:none">
</form>

你可以使用jQuery来触发重置，代码如下:

$('#file_reset').trigger('click');

（JSFIDDLE： http://jsfiddle.net/eCbd6/）

我一直在寻找简单而干净的方法来清除HTML文件输入，上面的答案是伟大的，但没有一个真正回答我在寻找什么，直到我在网络上遇到了一个简单而优雅的方法来做到这一点:

var $input = $("#control");

$input.replaceWith($input.val('').clone(true));

这一切都要归功于克里斯·科伊尔。

// Referneces var control = $("#control"), clearBn = $("#clear"); // Setup the clear functionality clearBn.on("click", function(){ control.replaceWith( control.val('').clone( true ) ); }); // Some bound handlers to preserve when cloning control.on({ change: function(){ console.log( "Changed" ) }, focus: function(){ console.log( "Focus" ) } }); <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <input type="file" id="control"> <br><br> <a href="#" id="clear">Clear</a>

我能够得到我的工作与以下代码:

var input = $("#control");    
input.replaceWith(input.val('').clone(true));

在IE8中，为了安全起见，他们将文件上传字段设置为只读。查看IE团队的博客文章:

Historically, the HTML File Upload Control () has been the source of a significant number of information disclosure vulnerabilities. To resolve these issues, two changes were made to the behavior of the control. To block attacks that rely on “stealing” keystrokes to surreptitiously trick the user into typing a local file path into the control, the File Path edit box is now read-only. The user must explicitly select a file for upload using the File Browse dialog. Additionally, the “Include local directory path when uploading files” URLAction has been set to "Disable" for the Internet Zone. This change prevents leakage of potentially sensitive local file-system information to the Internet. For instance, rather than submitting the full path C:\users\ericlaw\documents\secret\image.png, Internet Explorer 8 will now submit only the filename image.png.

$("#control").val(")就是你所需要的!使用JQuery 1.11在Chrome上测试

其他用户也在Firefox中进行了测试。

这对我很有用。

$("#file").replaceWith($("#file").clone());

http://forum.jquery.com/topic/how-to-clear-a-file-input-in-ie

希望能有所帮助。