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StatusP.innerHTML = 'The file selected is not an image.' įormData.append('fileAjax', file, file.name) Select only the first file from the input array Var statusP = document.getElementById('status') Var myFile = document.getElementById('fileAjax') // Our HTML files' ID Copy and paste this code: var myForm = document.getElementById('formAjax') // Our HTML form's ID Creating an AJAX scriptĬreate an imageUpload.js file in your AJAX-test project’s folder. Even though we’re pointing the form’s action to the PHP script, we’ll also create a JavaScript that will intercept form submissions and provide asynchronous feedback. In this form, we don’t need to specify the enctype attribute, because it’s only required for text input management (e.g., replacing blank spaces with ‘+’ symbols before sending the string via POST to the server).Īlso, we need to set an id for the input fields, because we’ll refer to this in our AJAX script. The method of sending data to a server is POST. The action form points to a PHP script that processes image file uploading. It is a straightforward form with a file select input and a submit button:
#JAVA AJAX FILE UPLOAD EXAMPLE CODE#
Creating an HTML formĬreate a folder for the project (e.g., AJAX-upload) in your website’s root directory ( (usually it’ll be something like public_html, htdocs, or Copy & paste the following file-uploading code into your newly created file. Local htdocs folder for AJAX file uploader Step 1. Without further introduction, let’s create an AJAX upload example.
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This article shows two ways of implementing an AJAX file uploader. However, you can also adapt the script for general file uploading in no time. One example is image uploading, and we’ll be taking a closer look at that in this article. With AJAX, you can upload files faster as well. One of the best examples of AJAX in action is when you start typing in a search field, and it suggests similar results in a popup. It provides immediate updates to active elements only, without reloading the whole HTML page. Sometimes, file uploaders may take a while to reload a whole page, send requests to a server, wait for the responses, and then wait for the entire page to refresh on the client side.ĪJAX, short for Asynchronous JavaScript and XML, is a well-known technique for creating better UX with much faster responses from the webserver.