Hire the best AJAX developers

Check out AJAX developers with the skills you need for your next job.

Clients rate AJAX developers
Rating is 4.7 out of 5.
4.7/5
based on 4,264 client reviews
Yevgen S.
$55/hr
  • Trophy Icon AJAX
  • PHP
  • MySQL
  • JavaScript
  • HTML
  • CSS

Over the last 20 years, I have developed data-driven applications mostly for web using advanced backend with PHP/MySQL and rich frontend HTML/CSS/JavaScript. My experience includes web applications for small-to-middle business automation, corporate websites based on CMS/CMF, online shops, Social networks, Search Engines, etc. Advanced communication skills: fluent English and Italian. Experience of team leading. Vast knowledge of: Databases, SQL, OOP, JavaScript, Ajax, optimization, automated testing, usability, software design and development. More than ten years of offshore development for the North American and European customers. High...

Jess D.
$80/hr
  • Trophy Icon AJAX
  • Adobe ColdFusion
  • Ext JS
  • Fusebox

Since February 2000, I have developed a variety of web applications using Coldfusion and/or Sencha ExtJS. Most of them have included interaction with a database such as MS SQL, MySQL or IBM DB2. I am seeking part-time freelancing opportunities to expand my knowledge and challenge me.

Viktor M.
$50/hr
  • Trophy Icon AJAX
  • Theme Customization
  • Theme Development
  • Liquid
  • Website Customization
  • JavaScript
  • Landing Page
  • HTML5
  • CSS 3
  • jQuery
  • PSD to HTML
  • GitHub
  • Vue.js
  • Adobe Photoshop

I’m a front-end Developer. I can build adaptive and high-quality layouts on your design or adapt the website to your corporate identity. I can also create any custom development, complex logic or other tasks related to the frontend. I have a perfect understanding of how liquid, JavaScript, HTML and CSS work, and have a lot of experience working with all of them. If you want to build a really high-quality website and need help doing so, contact me! I also have a bachelor's degree in "Organization and Information Security Technology", and have used technologies like HTML5, CSS3, JavaScript, SASS, Grunt, Git, Liquid, Bootstrap, Vue, PostsCSS,...

Omar K.
$50/hr
  • Trophy Icon AJAX
  • WordPress Plugin
  • API Development
  • PHP
  • Google Maps API
  • Object Oriented PHP
  • Plugin Development
  • WordPress e-Commerce
  • WordPress

What i do in WordPress: - WordPress Plugin Development (From scratch or Customize any plugin). - WordPress Theme Development (From scratch or with ANY framework). - API Integration (Integrate any API to WordPress). - WP Rest API (adding or editing endpoints, authentication with CRUD for any post type). One of my plugins in WordPress Repository bit.ly/omar-wpp Also in the Woocommerce marketplace bit.ly/omar-woop This is exactly what you are going to get from me. (Client Review) "Omar completed every task to a high standard and before deadlines. Omar was able to look at the scope of work and offer further advice which made the...

Raj T.
$75/hr
  • Trophy Icon AJAX
  • WordPress
  • Google Analytics
  • PHP
  • CSS
  • HTML
  • Java
  • JavaScript
  • MySQL Programming
  • Search Engine Optimization

Melbourne based Expert WordPress Developer I'm a professional freelancer with 10 years of experience in various technology. I have experience in WordPress, PHP, JavaScript, HTML, CSS, Ajax, REST and SOAP services. I believe in a long-term relationship and client satisfaction. I go above and beyond to get the results that satisfy me. My client reviews show more about my work.

Piotr N.
$55/hr
  • Trophy Icon AJAX
  • Laravel
  • CSS
  • HTML
  • PHP
  • SQL
  • JavaScript
  • jQuery
  • Tailwind CSS
  • Vue.js
  • MySQL
  • Linux

As Laravael Full Stack Developer I’m comfortable operating across various tech stacks and languages, such assuch as PHP (mostly Laravel framework), JavaScript (Vue), databases (MySql, Postgres). Currently, my professional goals are focused on mastering Docker technologies and modern JavaScript trends to keep up with the current advancements in our software development industry. I am a part of the Polcode team, a Polish software development company established in 2006 with over 150 developers, designers, project managers, DevOps and QA specialists onboard. This means that besides my programming skills you always have access to a full-stack...

Rafal W.
$49/hr
  • Trophy Icon AJAX
  • MySQL Programming
  • PHPUnit
  • Back-End Development
  • Core PHP
  • MySQL
  • Custom PHP
  • jQuery
  • PHP Developer
  • SQL
  • Object Oriented PHP
  • API Integration
  • PHP
  • JavaScript
  • Laravel Developer
  • Laravel

Hello. My name is Rafal and I came from Poland. I'm an experienced back-end developer. I have graduated in Silesian University of Technology. I have participated as part of a team or I have developed several dozen projects myself. I'mpleased to combine economic, e-commerce and IT problems. I like challenges and difficult problems that require me to deepen my knowledge and inventiveness. I'minterested in long-term cooperation based on honest and partnership principles. I can work during the business time of your time zone and I provide references from my clients on request. Feel free to contact with me and ask for more details. Rafal...

Sumit Kumar M.
$30/hr
  • Trophy Icon AJAX
  • API
  • Plugin Customization
  • Web Development
  • PHP
  • jQuery
  • API Integration
  • WordPress
  • WordPress Plugin
  • HTML5
  • CSS 3
  • JavaScript
  • Plugin Development

A passionate Programmer; has been working & developing on PHP-WordPress Projects since 2013. Possess tremendous potentials; need platform to transform them in the field of Web Technology and Application Development... :) What I have is: - Strong concept on structured & Object-Oriented Programming. - Working knowledge on PHP-MySQL, Javascript-Jquery and CMS like Wordpress, BigCommerce & Magento. - Fast-learning and adaptive skills with can do attitude (leadership in nature).

Muhammad A.
$50/hr
  • Trophy Icon AJAX
  • Drupal
  • PHP
  • MySQL
  • Git
  • Linux System Administration
  • LAMP Administration
  • Search Engine Optimization
  • Project Management
  • Database Modeling
  • Asterisk
  • Joomla
  • HTML
  • Adobe ColdFusion
  • J2EE

Over the last 16 years, I have developed a wide range of websites PHP, and MySQL including sites for startup companies mid-large enterprises. My core competency lies in complete end-end management of a web development project, and I am seeking opportunities to build Web Apps with rich features like CMS, Blogs, Videos, I also have some experience in the following areas: SQL, Ajax, OOP, and software design and testing. My Primary area of development is in PHP, Drupal.

Andrii K.
$50/hr
  • Trophy Icon AJAX
  • PHP
  • JavaScript
  • API Development
  • SQL
  • jQuery
  • OpenCart
  • CSS 3
  • Laravel
  • Angular 5
  • Ecommerce Platform Development
  • API
  • WordPress
  • Kohana
  • Bug Fix

Thank you for visiting my profile. Currently I hold a Degree on Web Development and I've been working on the Web Development field for over 6 years as a web-developer. I'm a very detail oriented person when it comes to design and development also hardworking and responsible specially with deadlines. Working with Laravel, Angular, JavaScript, MySQL, PHP, OpenCart, Wordpress. Just check out my portfolio and let's work.

Anastasiia K.
$25/hr
  • Trophy Icon AJAX
  • WordPress
  • WooCommerce
  • PHP
  • CSS 3
  • HTML5
  • jQuery
  • Vue.js
  • React
  • Laravel
  • WordPress e-Commerce
  • Stripe
  • Bug Fix

Over the last 5 years I have been developing web-sites for various amazing businesses and private clients using Wordpress ( PHP, HTML5, CSS3, jQuery, CSS, Vue.js/React.js, MySQL). My specialization lies in developing eCommerce/Woocommerce websites as well as Learning Management Site and pure PHP solutions for various purposes. -My main priority lies in completing the tasks on time and providing timely response to my partners. -I pay a lot of attention to details -I believe that every project starts with a creative idea behind it that stands out and I am ready to help you to bring it to life -I am opened for long-term collaboration.

Dimitris S.
$30/hr
  • Trophy Icon AJAX
  • PHP
  • JavaScript
  • MySQL Programming
  • Web Scraper
  • Data Scraping
  • jQuery

Programming is my passion. I'm a professional PhP / Javascript developer for more than 7 years. I have developed complex projects like Booking Engines, Newsletter Mechanism, CRM, CRS and web Scrappers. I love to push my skills even further although I don't know any particular javascript or php framework, I'm the one to call when things start to break. I love killing bugs and invent new approaches to make things run.

Tania H.
$20/hr
  • Trophy Icon AJAX
  • jQuery
  • PSD to CMS
  • JavaScript
  • PHP
  • CSS 3
  • HTML5
  • Adobe XD
  • WordPress
  • Figma
  • PSD to WordPress
  • MySQL
  • Ecommerce Website
  • Web Design
  • SQL
  • PSD to HTML

Hey, Myself Tania. I'm a computer graduate and WordPress Website Designer and Developer with 7+ years of experience. I'm specialized in responsive, mobile-friendly, SEO optimized, clean & responsive WordPress Website development. Including Business site, Personal/Portfolio site, Corporate site, eCommerce Site, Blog site, Landing Page, or any custom WordPress site. I have extensive knowledge and expertise in these areas: - Logo and Branding - Web and Graphic Design - XD/PSD/FIGMA to HTML to WordPress - Page Builders (Elementor, WP-Bakery, Gutenberg, DIVI, Avada) - JavaScript and jQuery Implementation - Responsive Design - Theme Options /...

Muhammad U.
$25/hr
  • Trophy Icon AJAX
  • React
  • Node.js
  • RESTful API
  • jQuery
  • API Development
  • SQL
  • JavaScript
  • ExpressJS
  • DevOps
  • CodeIgniter
  • API Integration
  • MongoDB
  • PHP
  • Laravel

✅ Rewarded as 🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 🏆 by Upwork (𝗧𝗼𝗽 𝟯%) ✅ ⭐⭐⭐⭐⭐ Rating ✅ 2100+ hours and still counting ✅ 100% Job Success (Client Satisfaction Ratio) ✅ 100% of Clients Recommended work with me ✅ 80% of Long-term Repeat Clients ✅ 8+ Years Of Experience ✅ High-Quality Work ✅ Many jobs completed successfully ✅ Cost-Effective ✅ Fluent English Communication Whether you are a 𝗦𝘁𝗮𝗿𝘁𝘂𝗽, 𝗘𝘀𝘁𝗮𝗯𝗹𝗶𝘀𝗵𝗲𝗱 Firm/Company 𝗼𝗿 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿 any type of Customizations, you will be provided 𝗛𝗶𝗴𝗵-𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 at an 𝗔𝗳𝗳𝗼𝗿𝗱𝗮𝗯𝗹𝗲 𝗖𝗼𝘀𝘁 here, 𝗚𝘂𝗮𝗿𝗮𝗻𝘁𝗲𝗲𝗱!. Wanna start right now?...

Anjali S.
$22/hr
  • Trophy Icon AJAX
  • Laravel
  • API Development
  • WordPress Development
  • CodeIgniter
  • Plugin Development
  • Theme Development
  • Ecommerce Platform Development
  • API
  • JavaScript
  • API Integration
  • Web Application
  • Database Design
  • WordPress
  • PHP

Hi there! I am a Web Developer having 7+ years of experience in web development looking for new opportunities in Laravel, CodeIgniter, WordPress, API Development. I am open to all kinds of projects long term, midterms, and short term.

Anton L.
$50/hr
  • Trophy Icon AJAX
  • Symfony
  • Angular
  • API Development
  • API Integration
  • AngularJS
  • PHP
  • Laravel
  • Mobile App
  • Symfony 4
  • Vue.js
  • Amazon Web Services
  • Payment Functionality
  • RESTful API
  • CMS Development
  • MariaDB

Hello ✋ Helping companies to realize their ideas, Web and Mobile development. I work totally more than 15 years in IT. Large international experience. 𝐌𝐘 𝐒𝐓𝐑𝐎𝐍𝐆 𝐄𝐗𝐏𝐄𝐑𝐓𝚰𝐒𝐄 💻: - Symfony development - Payment Integration - Admin dashboards - Rest Api and 3rd party services - Testing - Mobile Development - Email Marketing & automation - DevOps 𝐌𝐘 𝐓𝐎𝐏 𝐒𝐊𝚰𝐋𝐋𝐒 🏂: - Symfony 2.*, 3.*, 4.*, 5.*, 6.0 - Php 5.4, 7.1 - 7.4, 8.0, 8.1 - Vue 2, 3 / Angular 1-14 / React - React Native / Ionic - Docker, CI/CD, Ansible, AWS, Azure I can realize really difficult tech tasks with strong patterns: Solid, Dry, KISS, DDD, CQRS,...

Gurtej S.
$30/hr
  • Trophy Icon AJAX
  • WordPress
  • HTML5
  • CSS 3
  • Search Engine Optimization
  • Magento
  • HubSpot
  • Landing Page
  • Salesforce CRM

**Hubspot Certified** Are you looking for the Hubspot Expert, Hubspot certified Designer or Developer? If so, you are at the right place. I am specialized in these platforms and having versatile experience in building and customizing landing page templates, blog templates, email templates, custom hubl modules, CTAs, forms, workflows and CRM I have been actively involved in front end & back end development since April 2013. Specifically, I had contracted for a Canadian web based marketing agency for almost three years and have also been active self-employed projects. In this time I have been fortunate enough to work on a wide range of...

Arun K.
$25/hr
  • Trophy Icon AJAX
  • PHP
  • MySQL
  • WordPress
  • jQuery
  • JavaScript
  • OpenCart
  • Data Scraping
  • Regex Writing
  • PayPal Integration

I have more than 6 years of expertise in the field of web development and designing using some of the famous and secured PHP frameworks (CakePHP, CodeIgniter, Laravel) and several CMS (Content Management Systems) very minutely as per the client requirements. I specialize in WordPress and have also worked in other eCommerce platforms Shopify, PrestaShop, opencart, Magento and Joomla. Payment Platform Integration - Paypal, Stripe, SecurePay, payzippy, Payoneer and more... API - WooCommerce, Google, Forecast.io (Dark Sky), Xignite, Autoresponder (MailChimp, Aweber, Active Campaign, GetResponse), Crunchbase, Youtube, Twitter, Linkedin,...

Kapil P.
$30/hr
  • Trophy Icon AJAX
  • Ruby on Rails
  • Heroku
  • PostgreSQL
  • MySQL
  • jQuery
  • HTML
  • CSS 3
  • CSS
  • API Integration
  • SQL
  • Git
  • MongoDB
  • RESTful API
  • JavaScript

Over the last 10+ years, experienced Ruby on Rails developer. I have Excellent knowledge with GIT, Heroku, bootstrap and good hand with web designing. I have worked a wide range of websites using ROR and MySQL/PostgreSQL, JavaScript including sites for startup companies and small businesses. 10+ years as a ROR developer 9+ years as a Systems Administrator 8+ years as Cloud Expert and SaaS Architect 4+ years as DevOps Skills: - Ruby on Rails(with the latest version), - Testing( RSpec, Cucumber, Capybara), - TDD, BDD, MVC, - Version control systems (svn, git), - Bugtracking systems (pivotal, Jira, Asana, Campfire, redmine), - JavaScript...

Ripal P.
$28/hr
  • Trophy Icon AJAX
  • LMS Plugin
  • API Development
  • WordPress Plugin
  • PSD to WordPress
  • WordPress Multisite
  • Memberium
  • WordPress Theme
  • JavaScript
  • WordPress
  • Gravity Forms
  • Front-End Development
  • Shopify
  • PHP
  • Figma
  • React

TOP-RATED (TOP 5% of Talent) I am Ripal Patel, a Web Designer, and Developer with 7+ years of experience and 60+ projects delivered. I have worked for the largest software giants and the smallest tech start-ups too. I have worked with Infusionsoft as a developer and have used numerous other integration platforms such as API and Zapier. I have a passion for integrating disparate systems, everything from one way pushes to complete, two-way synchronization between systems in real-time or in batch. When it comes to design and development, I am expert at WordPress and Shopify. Areas of Expertise • Divi Theme Builder and Elementor Builder •...

Raj S.
$15/hr
  • Trophy Icon AJAX
  • Magento 2
  • Ecommerce Platform Development
  • Shopify
  • Web Design
  • PHP
  • Python
  • Adobe Photoshop
  • Laravel
  • WordPress
  • WooCommerce
  • React Native
  • React
  • Database
  • App Development
  • Angular

I am an experienced full-stack developer with 10+ years of experience, working on the web, mobile, and desktop applications with trending technologies. I have got my hands on different technologies. I am often mentioned as an IT expert, but I would call myself a self-motivated developer who doesn't wait to be pushed but tries to find a place to improve myself and the products I'm working on. I'm known for paying lots of attention to details: while I like architecture things, I'm not an "architecture astronaut", I love to spend time thinking about a product as if I was its user, reviewing user experience, and improving it. I'm passionate...

Fares G.
$35/hr
  • Trophy Icon AJAX
  • API Integration
  • Tailwind CSS
  • Laravel
  • MVC Framework
  • MySQL
  • Git
  • jQuery
  • Symfony
  • JavaScript
  • PHP
  • CSS 3

🔷Top Rated on Upwork since early 2021. 🔷Full-time freelancer, independent and reliable. 🔷 What I can help you with: ✳️Building websites and SaaS solutions using modern technologies of PHP and Javascript. ✳️Designing and building responsive webpages for your brand or online solution. 🔷 What clients says about me? ✅"𝑨 𝒗𝒆𝒓𝒚 𝒕𝒂𝒍𝒆𝒏𝒕𝒆𝒅 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓! 𝑯𝒆 𝒊𝒔 𝒗𝒆𝒓𝒚 𝒄𝒓𝒆𝒂𝒕𝒊𝒗𝒆, 𝒇𝒂𝒔𝒕, 𝒂𝒏𝒅 𝒓𝒆𝒔𝒑𝒐𝒏𝒔𝒊𝒗𝒆." - 𝑨𝒏𝒅𝒓𝒆𝒘 𝑺𝒖𝒍𝒍𝒊𝒗𝒂𝒏, 𝑷𝑮𝑺𝒐𝒇𝒕𝒘𝒂𝒓𝒆. ✅"𝑭𝒂𝒓𝒆𝒔 𝒌𝒏𝒐𝒘𝒔 𝒉𝒊𝒔 𝒘𝒂𝒚 𝒂𝒓𝒐𝒖𝒏𝒅 𝒋𝒔/𝒋𝑸𝒖𝒆𝒓𝒚. 𝑯𝒆 𝒅𝒊𝒅 𝒂 𝒈𝒐𝒐𝒅 𝒋𝒐𝒃 𝒃𝒖𝒊𝒍𝒅𝒊𝒏𝒈 𝒕𝒉𝒆 𝒔𝒍𝒊𝒅𝒆𝒓 𝒂𝒏𝒅...

Jeremiah A.
$125/hr
  • Trophy Icon AJAX
  • Web Application
  • Website Development
  • API
  • React
  • WordPress
  • Node.js
  • TypeScript
  • Next.js
  • Elasticsearch
  • JavaScript
  • Wix
  • RESTful API
  • Amazon Web Services
  • Stripe
  • Auth0

My expertise has helped increase revenue by hundreds of thousands for several major media brands in the LA area. Some notable brands include: - LAist - KPCC - LAist Studios - The Big One I have expertise in several technologies: JavaScript, TypeScript, React, Next.js, Node.js, Nest.js, PHP, Ruby on Rails, HTML, CSS, AWS, Wordpress, Wix, Google Services, Stripe, Auth0, and Docker to name a few.  My approach is to fully understand your needs and craft a solution that’s tailor-made for you. I look forward to getting to know you and helping you grow your business to its maximum potential! Testimonials: "I'm not exaggerating when I say Jay is...

Prashant M.
$15/hr
  • Trophy Icon AJAX
  • RESTful API
  • PHP
  • MySQL
  • CodeIgniter
  • Laravel
  • WordPress
  • PSD to HTML
  • Logo Design
  • PHP Script
  • Ecommerce Website
  • CMS Development
  • Web Application
  • API Integration
  • Customer Relationship Management

I have over 12 years of experience in Project Management and working in PHP. For project management I used Jira, Trello, Asana etc. In Development I have good hold on Laravel, Word press, Joomla, Codeignitor, Opencart. I have good knowledge in coding in PHP. Also I can work on web design as well. I have very good knowledge of responsive design.

Charan Kanwal S.
$25/hr
  • Trophy Icon AJAX
  • WordPress
  • Magento
  • Shopify
  • PHP
  • jQuery
  • Squarespace
  • Gravity Forms
  • Plugin Development
  • Theme Customization
  • Plugin Customization
  • CodeIgniter
  • CakePHP
  • API
  • WordPress Plugin

✅ Top Rated Developer on Upwork ✅ Above 95% Job Success Score ✅ 60+ Jobs Done ✅ 15K+ Hours Worked I am a creative engineer with over 11 years of experience who loves to build slick products that work out perfectly. Till date, I have created over 200+ websites and I have customized nearly every aspect of WordPress, Magento, and Shopify and debugged some of its deepest layers to determine how to implement the one line of code that solves the root issue rather than the 100 lines of code that treat the symptom. My aim has always been to produce websites that look beautiful and professional, are highly functional, load quickly, and are...

Abdumalik K.
$20/hr
  • Trophy Icon AJAX
  • HTML
  • CSS
  • Bootstrap
  • JavaScript
  • jQuery
  • PHP
  • MySQL
  • API
  • Search Engine Optimization
  • ERP Software
  • CRM Software
  • Custom PHP
  • Jira
  • WordPress

𝐇𝐢. Thank you so much for coming here. 𝗜’𝗺 𝗮 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗶𝘁𝗵 3 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗶𝗻 𝗣𝗛𝗣, 𝗠𝘆𝗦𝗤𝗟, 𝗛𝗧𝗠𝗟𝟱/𝗖𝗦𝗦𝟯/𝗕𝗼𝗼𝘁𝘀𝘁𝗿𝗮𝗽, 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁/𝗷𝗤𝘂𝗲𝗿𝘆/𝗔𝗷𝗮𝘅. By working on a wide range of websites I can develop everything from simple landing pages to high-level customization. - 𝐈 𝐚𝐦 𝐫𝐞𝐚𝐝𝐢𝐥𝐲 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞 𝐨𝐯𝐞𝐫 𝐔𝐩𝐰𝐨𝐫𝐤 𝐟𝐨𝐫 𝐝𝐢𝐬𝐜𝐮𝐬𝐬𝐢𝐨𝐧 𝐚𝐛𝐨𝐮𝐭 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬. - 𝐈 𝐚𝐦 𝐰𝐢𝐥𝐥𝐢𝐧𝐠 𝐭𝐨 𝐞𝐬𝐭𝐚𝐛𝐥𝐢𝐬𝐡 𝐥𝐨𝐧𝐠 𝐭𝐞𝐫𝐦 𝐰𝐨𝐫𝐤 𝐫𝐞𝐥𝐚𝐭𝐢𝐨𝐧𝐬𝐡𝐢𝐩. - 𝟏𝟎𝟎% 𝐜𝐥𝐢𝐞𝐧𝐭 𝐬𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧 𝐢𝐬...

Sajeda A.
$30/hr
  • Trophy Icon AJAX
  • CodeIgniter
  • PHP
  • Vue.js
  • API
  • Web Development
  • MySQL
  • WordPress
  • CSS
  • Laravel
  • HTML
  • HTML5
  • Website
  • jQuery
  • WordPress Plugin

My goal is to create amazing websites and web-based applications that drive your business. Focusing on PHP, Wordpress, Codeigniter,Laravel, Html, Css, Jquery/Javascript, User experience and visual design.

$NaN/hr

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What is AJAX (Asynchronous JavaScript + XML)?

AJAX (Asynchronous JavaScript + XML) is a group of interrelated client- and server-side development technologies that allows parts of a webpage to be updated without having to reload the entire page—think of sites like YouTube, Google Maps, Gmail, and tabs within Facebook. It changed usability and the speed of web applications with its innovative concept: asynchronously exchanging small amounts of data with the server behind the scenes, without affecting the rest of the page.

AJAX makes features like drop-down menus, predictive text, auto-filled text, and more possible, all without clicking Refresh. What it means for servers is less stress on the network and faster operations. That’s the core benefit of AJAX-enabled sites: overall, they’re more responsive and very efficient on both sides.

How does AJAX work?

AJAX calls are asynchronous, meaning they’re made behind the scenes, independently from each other and the site as a whole. When a browser makes an AJAX call to the server, it isn’t stuck waiting for a response, halting all of the site’s functionality. Instead, the web service on the server will send the data back to the browser once the task is completed, where client-side scripts will process the response and deliver it to the user.

AJAX breakdown

AJAX uses the following technologies:

  • XML or JSON: the text-only format used to transfer data from server to browser script. Developers are increasingly using JSON over XML because of its native JavaScript compatibility.
  • CSS: the language used to style how the data will look onscreen
  • JavaScript: displays the data in the browser and processes user requests/interactions like clicks
  • XMLHttpRequest objects: the keystone of AJAX, they actually retrieve the data with the server behind the scenes. All modern browsers support XMLHttpRequests.

Callbacks vs. Postbacks.

Pre-AJAX, the rules for client calls to the server—basically, anything the browser requests from a database to make a site responsive—were “postbacks,” plus server-side processing. Post-AJAX, the browser can “callback,” requesting small amounts of data directly from the server—all without needing to wait for a postback.

Benefits of AJAX

  • Better speed and performance
  • More responsive, user-friendly websites and applications
  • Ease of development, thanks to JSON, jQuery, and compilers that help to streamline complex JavaScript code
  • Browser- and platform-independent. Also, Microsoft offers the AJAX Control Toolkit integrated into Visual Studio on the ASP.NET platform.
  • Ideally implemented for updating small bits of information within a web application
  • Allows text box autocomplete and predictive text
  • Won’t slow down with limited bandwidth. With AJAX callbacks, the server won’t get overloaded by requests, which would otherwise cause the app to slow down.

AJAX is just one advancements in the front-end development landscape—learn more about front-end web development and how AJAX fits into the client-side technology landscape as a whole.

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