This is another file and image upload tutorial using jQuery. I am using Blueimp jQuery Plugin to upload files into the server folder using JavaScript and PHP. PHP for server-side programming to upload files and images on the server.
Blueimp jQuery Plugin
Blue-imp File Upload widget has many features like multiple file selection, drag&drop support, progress bar, validation and preview images, audio and video for jQuery.
It also supports cross-domain, chunked and resumable file uploads. You can integrate with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.
jQuery File Upload application file structure as below:
index.html : This file will have HTML code to display add file and list-down all uploaded files.common.js : This file will contain all jquery code to upload files and images.server/index.php : This file will create the main php handler class object.server/UploadHandler.php : This file will have all handler methods to upload and save into a folder.server/files : This folder will contain the uploaded image and thumbnail of file/image.
Also Checkout other useful jQuery tutorials,
- Simple Example of Pagination Using jQuery and Bootstrap
- Multi Step Form with Progress Bar using jQuery and Bootstrap CSS
- Simple Example of Hide, Show and Toggle Element Using jQuery
- Dynamically Add and Remove rows in a Table Using jquery
How to upload Files and Images using jQuery Widget
We need to download libs from Github Repo and include them as a local repository.
How To Install Using npm
jQuery File Upload can be installed via NPM:
npm install blueimp-file-upload
You can also use the CDN path for blueimp file upload libs. I am using the CDN path in the head section of index.html file.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <!-- The jQuery UI widget factory, can be omitted if jQuery UI is already included --> <script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-file-upload/9.19.2/js/vendor/jquery.ui.widget.js"></script> <!-- The Templates plugin is included to render the upload/download listings --> <script src="//blueimp.github.io/JavaScript-Templates/js/tmpl.min.js"></script> <!-- Bootstrap JS is not required, but included for the responsive demo navigation --> <script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script> <!-- The Load Image plugin is included for the preview images and image resizing functionality --> <script src="//blueimp.github.io/JavaScript-Load-Image/js/load-image.all.min.js"></script> <!-- The Canvas to Blob plugin is included for image resizing functionality --> <script src="//blueimp.github.io/JavaScript-Canvas-to-Blob/js/canvas-to-blob.min.js"></script> <!-- Bootstrap JS is not required, but included for the responsive demo navigation --> <script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script> <!-- The Iframe Transport is required for browsers without support for XHR file uploads --> <script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-file-upload/9.19.2/js/jquery.iframe-transport.min.js"></script> <!-- The basic File Upload plugin --> <script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-file-upload/9.19.2/js/jquery.fileupload.min.js"></script> <!-- The File Upload processing plugin --> <script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-file-upload/9.19.2/js/jquery.fileupload-process.min.js"></script> <!-- The File Upload image preview & resize plugin --> <script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-file-upload/9.19.2/js/jquery.fileupload-image.min.js"></script> <!-- The File Upload validation plugin --> <script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-file-upload/9.19.2/js/jquery.fileupload-validate.min.js"></script> <!-- The File Upload user interface plugin --> <script src="https://cdnjs.cloudflare.com/ajax/libs/blueimp-file-upload/9.19.2/js/jquery.fileupload-ui.min.js"></script> <script src="common.js"></script>
I have only used Bootstrap and jQuery libs as dependency files for blueimp upload plugin. We have created a separate common.js file for JavaScript code of file upload.
We will create a widget button to add files, start the upload, cancel the upload, and delete the upload. We need to add the code below into index.html file.
<form id="fileupload" action="//demo-test/" enctype="multipart/form-data" method="POST">
<!-- Redirect browsers with JavaScript disabled to the origin page -->
<noscript><input type="hidden" name="redirect" value="//demo-test/"></noscript>
<!-- The fileupload-buttonbar contains buttons to add/delete files and start/cancel the upload -->
<div class="well row fileupload-buttonbar">
<div class="col-lg-7">
<!-- The fileinput-button span is used to style the file input field as button --> <span class="btn btn-success fileinput-button"> <i class="glyphicon glyphicon-plus"></i> Add files... <input multiple="multiple" name="files[]" type="file"> </span> <button class="btn btn-primary start" type="submit"> <i class="glyphicon glyphicon-upload"></i> Start upload </button> <button class="btn btn-warning cancel" type="reset"> <i class="glyphicon glyphicon-ban-circle"></i> Cancel upload </button> <button class="btn btn-danger delete" type="button"> <i class="glyphicon glyphicon-trash"></i> Delete </button> <input class="toggle" type="checkbox"> <!-- The global file processing state -->
</div>
<!-- The global progress state -->
<div class="col-lg-5 fileupload-progress fade">
<!-- The global progress bar -->
<div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100">
<div class="progress-bar progress-bar-success" style="width: 0%;"> </div>
</div>
<!-- The extended global progress state -->
<div class="progress-extended"> </div>
</div>
</div>
</form>
We will add the bootstrap table to list down all uploaded and added(pending to upload) upload files.
We have jQuery template libs to create upload/uploaded templates using jQuery and HTML. We will add the below code into the bottom of index.html file.
<script id="template-upload" type="text/x-tmpl">
{% for (var i=0, file; file=o.files[i]; i++) { %}
<tr class="template-upload fade">
<td>
<span class="preview"></span>
</td>
<td>
<p class="name">{%=file.name%}</p>
<strong class="error text-danger"></strong>
</td>
<td>
<p class="size">Processing...</p>
<div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><div class="progress-bar progress-bar-success" style="width:0%;"></div></div>
</td>
<td>
{% if (!i && !o.options.autoUpload) { %}
<button class="btn btn-primary start" disabled>
<i class="glyphicon glyphicon-upload"></i>
<span>Start</span>
</button>
{% } %}
{% if (!i) { %}
<button class="btn btn-warning cancel">
<i class="glyphicon glyphicon-ban-circle"></i>
<span>Cancel</span>
</button>
{% } %}
</td>
</tr>
{% } %}
</script>
<!-- The template to display files available for download -->
<script id="template-download" type="text/x-tmpl">
{% for (var i=0, file; file=o.files[i]; i++) { %}
<tr class="template-download fade">
<td>
<span class="preview">
{% if (file.thumbnailUrl) { %}
<a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" data-gallery><img src="{%=file.thumbnailUrl%}"></a>
{% } %}
</span>
</td>
<td>
<p class="name">
{% if (file.url) { %}
<a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" {%=file.thumbnailUrl?'data-gallery':''%}>{%=file.name%}</a>
{% } else { %}
<span>{%=file.name%}</span>
{% } %}
</p>
{% if (file.error) { %}
<div><span class="label label-danger">Error</span> {%=file.error%}</div>
{% } %}
</td>
<td>
<span class="size">{%=o.formatFileSize(file.size)%}</span>
</td>
<td>
{% if (file.deleteUrl) { %}
<button class="btn btn-danger delete" data-type="{%=file.deleteType%}" data-url="{%=file.deleteUrl%}"{% if (file.deleteWithCredentials) { %} data-xhr-fields='{"withCredentials":true}'{% } %}>
<i class="glyphicon glyphicon-trash"></i>
<span>Delete</span>
</button>
<input type="checkbox" name="delete" value="1" class="toggle">
{% } else { %}
<button class="btn btn-warning cancel">
<i class="glyphicon glyphicon-ban-circle"></i>
<span>Cancel</span>
</button>
{% } %}
</td>
</tr>
{% } %}
</script>
We will add a jQuery code into a common.js file to upload and send ajax requests to the php server.
$(function () {
'use strict';
// Initialize the jQuery File Upload widget:
$('#fileupload').fileupload({
// Uncomment the following to send cross-domain cookies:
//xhrFields: {withCredentials: true},
url: 'server/'
//console.log('ggggg')
});
// Enable iframe cross-domain access via redirect option:
$('#fileupload').fileupload(
'option',
'redirect',
window.location.href.replace(
/\/[^\/]*$/,
'/cors/result.html?%s'
)
);
if (window.location.hostname === 'demo-test') {
$('#fileupload').fileupload('option', {
url: '//demo-test/server/',
// Enable image resizing, except for Android and Opera,
// which actually support image resizing, but fail to
// send Blob objects via XHR requests:
disableImageResize: /Android(?!.*Chrome)|Opera/
.test(window.navigator.userAgent),
//maxFileSize: 999000,
acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i
});
// Upload server status check for browsers with CORS support:
if ($.support.cors) {
console.log(window.location.hostname);
$.ajax({
url: '//demo-test/',
type: 'HEAD'
}).fail(function () {
$('
<div class="alert alert-danger">')
.text('Upload server currently unavailable - ' +
new Date())
.appendTo('#fileupload');
});
}
} else {
// Load existing files:
console.log(window.location.hostname);
$('#fileupload').addClass('fileupload-processing');
$.ajax({
// Uncomment the following to send cross-domain cookies:
//xhrFields: {withCredentials: true},
url: $('#fileupload').fileupload('option', 'url'),
dataType: 'json',
context: $('#fileupload')[0]
}).always(function () {
$(this).removeClass('fileupload-processing');
}).done(function (result) {
$(this).fileupload('option', 'done')
.call(this, $.Event('done'), {result: result});
});
}
});
</div>
Where 'demo-test' is the hostname and ‘/server’ is the folder name that will have PHP upload handler file.
We will add php server-side file upload files into the server folder, You can get from Github Repo
Conclusion:
This jQuery file upload tutorial has single and multiple file uploads. You can also upload multiple images/files as well as delete them. It also supports drag and drop file upload of multiple files and images.
You can download source code from the below link
