<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<input type="file" name="imageUpload" id="imageUpload" class="hide"/>
<label for="imageUpload" class="btn btn-large">Select file</label><br/><br/><br/>
<img src="" id="imagePreview" alt="Preview Image" width="200px"/>
.hide{display:none;}
.btn {
display: inline-block;
padding: 4px 12px;
margin-bottom: 0;
font-size: 14px;
line-height: 20px;
color: #333333;
text-align: center;
vertical-align: middle;
cursor: pointer;
border: 1px solid #bbbbbb;
border-color: #e6e6e6 #e6e6e6 #bfbfbf;
border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
border-bottom-color: #a2a2a2;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
.btn {
border-color: #c5c5c5;
border-color: rgba(0, 0, 0, 0.15) rgba(0, 0, 0, 0.15) rgba(0, 0, 0, 0.25);
}
.btn-large {
padding: 11px 19px;
font-size: 17.5px;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
$('#imageUpload').change(function(){
readImgUrlAndPreview(this);
function readImgUrlAndPreview(input){
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
$('#imagePreview').attr('src', e.target.result);
}
};
reader.readAsDataURL(input.files[0]);
}
});