simulating a click on a <input type=“file” /> jQuery, Opera

i have form with display none and input type file in it, I also made ​​a button. when you click on it should open download dialog box. This combination works in all browsers except Opera. Begins to work if to remove display: none;

<form id="imageform" method="post" enctype="multipart/form-data" action='' style="display: none;">
    <input type="file" name="photoimg" id="photoimg" />
</form>
<input type="button" id="upload" value="upload">

Jquery:

$('#upload').on("click", function () {
    $('#photoimg').click();
});

Please explain, how to avoid this.

Answers


It would be better if you use visibility: hidden instead of display:none

or you can try with pure CSS. for example:

#photoimg {
   left: -99999px
}

or

#photoimg {
   z-index: -999
}

or

#photoimg {
   width: 0px
}

or something like that


read this article. It's Opera bug. http://my.opera.com/community/forums/topic.dml?id=1054112


Instead of making the file input element display: none you can do this:

<div style="width:0;height:0;overflow:hidden;">
    <form id="imageform" method="post" enctype="multipart/form-data" action="">
        <input type="file" name="photoimg" id="photoimg" accept="image/*"
           onchange="document.getElementById('imageform').submit();" />
    </form>
</div>
<button id="upload" onclick="document.getElementById('photoimg').click();">
Upload</button>

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