
JavaScript Development Services
JavaScript is a dynamic programming language that creates an interactive user experience online. JavaScript brings webpages to life with interactive elements that engage users and make your brand stand out.
Interactive elements can even be used to tell a dynamic story, like the New York Times did with their All Birds article. Impressed? That’s the power of JavaScript.
Tell us about your development needs
Why use JavaScript?
JavaScript creates a rich user experience that captures attention, engages users, and creates a smooth user experience. User experience is central to your website’s success.
Interactive navigation. Make your navigation elements fun with JavaScript. Popular elements include panels that slide out when clicked, custom dialog boxes, and tabbed navigation with special effects.
Animations. Animations are a powerful way to capture and hold a visitor’s attention. Custom JavaScript animations will also help you achieve your conversion goals.

- Draw attention to your call-to-action with an animated arrow or a quick burst of color.
- If you have content-rich pages, display page loading progress in a spinner so visitors won’t bounce before the page is fully loaded.
- Dynamically reveal page elements in the viewport as the user scrolls up or down the page.
- Improve the user experience by using simple animations like page swipes to make it clear when a user is taken to a new page.
- Activate fun animations when a user hovers over an icon or image.
- Create a simple interactive game for visitors that aligns with your brand.
- Sell clothes? Have visitors dress up a character with drag-and-drop articles of clothing. Are you an educational organization? Create glowing icons that reveal informative content when clicked.
- Design your own custom branded animation – we’ll build it!
JavaScript consulting & development by Dev.co
At Dev.co, we provide world-class JavaScript planning, development, and testing according to industry best practices. We use leading-edge technologies to build JavaScript applications that website visitors love.
As experts in our industry, we continually deepen our knowledge in the latest JavaScript libraries and frameworks to provide our partners with cutting-edge customizations.
Our JavaScript development process
01. Discovery & brainstorming
As your development partner, we’ll dive deep to capture your vision and your business goals so we can create ideas together.
02.Planning
Once we collaborate on possibilities, we’ll identify the best ideas and create a plan for your development project. You’ll approve the ideas and we’ll figure out the technical feasibility of those ideas.
03.Design & development
Once you approve the elements to be developed, we’ll start designing your custom JavaScript application.
04. Testing
Once we begin developing your idea, we’ll send you clickable prototypes for testing and feedback. We’ll apply your feedback to the next round of development to achieve a final result you can be proud of.
Get in touch with us
If you’re ready to add more value to your website through dynamic visitor interaction, choose Dev.co for your JavaScript development partner. Connect with us today and let us know how we can help bring your ideas to life.
Our Development Process
2015Understanding
Background details
Vision & values
Target personas
Stakeholder insights2016Research & Discovery
Customer research
Competitive analysis
Expert audits & insights
Current market positioning2017Strategy
Story & personality
Market opportunities
Positioning & messaging
Creative brief development2018Creative
Naming
Logo development
Graphics standards
Verify function
Messaging framework2019Deliver & integrate
Brand book & styleguide
Print integration
Online & mobile
Further brand extension
- JavaScript was created in 1995 by a Netscape employee named Brendan Eich
- JavaScript powers 20% of WordPress’ core code
- JS is the only programming language that can be used on the front-end of a website
- Unlike other languages, you can begin a JavaScript statement with a semicolon
- JavaScript wasn’t always compatible with mobile devices, but is now supported by all modern web browsers for mobile and desktop
- JS can be used offline because it’s executed in the browser
- The best web developers can also program in JavaScript
- It’s hard to find a website that doesn’t utilize JS
- Although JavaScript was inspired by Java, they are completely different, although they share libraries and syntax
- JSON was born from JavaScript and is used to transfer data from a server to a webpage
- The popular document repository for journalists called DocumentCloud utilizes JavaScript and JSON to dynamically display document contents
- 69.7% of web developers prefer JavaScript
- JavaScript frameworks make it easy for developers to build a new project and saves time and money
- There are 24+ JS frameworks and 83+ libraries available for developers
- JavaScript programmers continually create new libraries to add more functionality and make programming easier
- jQuery and Node.js are the most popular JavaScript frameworks and are used in 50.4% and 48.3% of projects respectively. Angular.js and React.js come in second and are used in 32.4% and 32.3% of projects, respectively.