"Input File - Popover Preview Image "
Bootstrap 3.1.0 Snippet by fractorr

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<link href="//netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
<div class="row">
<div class="col-xs-12 col-md-6 col-md-offset-3 col-sm-8 col-sm-offset-2">
<!-- image-preview-filename input [CUT FROM HERE]-->
<div class="input-group image-preview">
<input type="text" class="form-control image-preview-filename" disabled="disabled"> <!-- don't give a name === doesn't send on POST/GET -->
<span class="input-group-btn">
<!-- image-preview-button button -->
<button type="button" class="btn btn-default image-preview-button" style="display:none;">
<span class="glyphicon glyphicon-picture"></span> Preview
</button>
<!-- image-preview-clear button -->
<button type="button" class="btn btn-default image-preview-clear" style="display:none;">
<span class="glyphicon glyphicon-remove"></span> Clear
</button>
<!-- image-preview-input -->
<div class="btn btn-default image-preview-input">
<span class="glyphicon glyphicon-folder-open"></span>
<span class="image-preview-input-title">Browse</span>
<input type="file" accept="image/png, image/jpeg, image/gif" name="input-file-preview"/> <!-- rename it -->
</div>
</span>
</div><!-- /input-group image-preview [TO HERE]-->
</div>
</div>
</div>
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.container{
margin-top:20px;
}
.image-preview-input {
position: relative;
overflow: hidden;
margin: 0px;
color: #333;
background-color: #fff;
border-color: #ccc;
}
.image-preview-input input[type=file] {
position: absolute;
top: 0;
right: 0;
margin: 0;
padding: 0;
font-size: 20px;
cursor: pointer;
opacity: 0;
filter: alpha(opacity=0);
}
.image-preview-input-title {
margin-left:2px;
}
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function closePreview(){
$('.image-preview').popover('hide');
// Need to improve the onhover event from here
//$('.image-preview').hover(
// function () {
// $('.image-preview').popover('show');
// },
// function () {
// $('.image-preview').popover('hide');
// }
//);
}
$(document).ready(function(){
// Set the close button
var closebtn = $('<button/>', {
type:"button",
text: 'x',
id: 'close-preview',
style: 'font-size: initial;',
});
closebtn.attr("class","close pull-right");
closebtn.attr("onclick","closePreview();");
// Set the popover default content
$('.image-preview').popover({
trigger:'manual',
html:true,
title: "<strong>Preview</strong>"+$(closebtn)[0].outerHTML,
content: 'Loading...',
placement:'bottom'
});
// Set the clear onclick function
$('.image-preview-clear').click(function(){
$('.image-preview').popover('hide');
$('.image-preview-filename').val("");
$('.image-preview-clear').hide();
$('.image-preview-button').hide();
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