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JS Image Loader
By : OlDenWeb Published on Sunday, June 26, 2016,22:20:40 in JavaScript Scripts
It’s a JavaScript script that can be easy integrated into any web application and work in actual web browsers. After the integration you can add images into the form and they will be uploaded on server. Images can be moved or rotated and they all will be resized automatically on the client side. Without jQuery, only pure JavaScript.
How to Integrate
1. Include stylesheet and script into the head section:<link href="imageloader.css" rel="stylesheet" type="text/css"> <script type="text/javascript" src="imageloader.js"></script>
2. Add a form into the body of the document:
<form class="imageloaderForm" method="post" enctype="multipart/form-data" action="save.php"> <input type="button" class="imageloaderBrowse" value="Browse Images"> <input type="button" class="imageloaderClear" value="Clear All"> <div class="imageloaderFiles" /> <input type="submit" value="Send Form" onClick="this.value = 'Uploading...'"> </form>
3. Add a script to init ImageLoader:
<script type="text/javascript"> document.addEventListener("DOMContentLoaded", function () { ImageLoader.init({ limit: 5, // files limit resize: true, // resize images or not (true/false) moveSpeed: 100, // animation speed during sorting maxWidth: 500, // max width if 'resize' enabled maxHeight: 500, // max height if 'resize' enabled isJpeg: false, // images format is JPEG or PNG with alpha channel (true/false) jpegQuality: 0.8, // jpeg quality of images if 'isJpeg' enabled (from 0 to 1) jpegBg: '#FFFFFF', // background fill color if 'isJpeg' enabled form: 'imageloaderForm', // form class name files: 'imageloaderFiles', // files container class name file: 'imageloaderFile', // file class name image: 'imageloaderImage', // image class name ghost: 'imageloaderGhost', // file ghost class name when sorting btnBrowse: 'imageloaderBrowse', // browse button class name btnClear: 'imageloaderClear', // clear button class name (optional) btnRotate: 'imageloaderRotate', // rotate button class name btnRemove: 'imageloaderRemove', // remove button class name rotateTitle: 'Rotate', // rotate button title removeTitle: 'Remove', // remove button title filter: ['.jpeg', '.jpg', '.png', '.gif', '.bmp', '.ico'], // files type filter onInitError: function(error){ // init error handler alert('ImageLoader: ' + error); } }); }) </script>
4. After the form will be submitted all uploaded images will be sended as variables that contain Base64 data. Variable names will have the prefix ‘imageloader’ so you can easy identify them from others. Here is an example of code how to save them into the files on PHP:
if(count($_POST) != 0){ $i = 1; while (list ($var, $value) = each ($_POST)) if(substr($var, 0, 11) == 'imageloader'){ file_put_contents($i.'.png', base64_decode($value)); // save file $i++; } }
