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Top JavaScript Agencies

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Hewitt Matthews

Portsmouth, United Kingdom

Top-Rated Custom Web Engineering & SEO Optimization by Hewitt Matthews

10-49

$ Min. $10,000+

$50 - $99 / hr

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</> React </> Next.js </> CSS Modules +10

E-Commerce Development Web Design Website Optimization +1

hewitt-matthe...

Web Development +1

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Rising Tech Dev

London, United Kingdom

Top-Rated Custom Web Engineering & SEO Optimization by Rising Tech Dev

10-49

$ Min. $5,000+

$50 - $99 / hr

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</> React </> Next.js </> CSS Modules +10

E-Commerce Development Web Design Website Optimization +1

rising-tech-d...

Web Development +1

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Major Visibility

Swindon, United Kingdom

Top-Rated Custom Web Engineering & SEO Optimization by Major Visibility

10-49

$ Min. $5,000+

$50 - $99 / hr

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</> React </> Next.js </> Node.js +7

Custom Software Development Website Optimization Web Development +1

major-visibil...

Web Development +2

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Qwestyon

Brighton and Hove

Top-Rated Custom Web Engineering & SEO Optimization by Qwestyon

50-249

$ Min. $5,000+

$100 - $149 / hr

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</> React </> Next.js </> Node.js +10

Mobile App Development Web Development

qwestyon.com

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Neujuice Design

Brighton and Hove

Top-Rated Custom Web Engineering & SEO Optimization by Neujuice Design

50-249

$ Min. $5,000+

$100 - $149 / hr

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</> React </> Next.js </> Node.js +9

Custom Software Development

neujuice-desi...

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Designmc Ltd

Leamington Spa

Top-Rated Custom Web Engineering & SEO Optimization by Designmc Ltd

50-249

$ Min. $5,000+

$100 - $149 / hr

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</> React </> Next.js </> Node.js +10

Mobile App Development Web Development

designmc.com

Web Development +2

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BONI Technology LTD

Brighton

Top-Rated Custom Web Engineering & SEO Optimization by BONI Technology LTD

50-249

$ Min. $5,000+

$100 - $149 / hr

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</> React </> Next.js </> Node.js +10

Mobile App Development Web Development

boni-technolo...

Web Development +2

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Codeepics Solutions

Peterborough

Top-Rated Custom Web Engineering & SEO Optimization by Codeepics Solutions

50-249

$ Min. $5,000+

$100 - $149 / hr

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</> React </> Next.js </> Node.js +10

Mobile App Development Web Development

codeepics-sol...

Web Development +1

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Dan King Digital

Hurstpierpoint, United Kingdom

Top-Rated Custom Web Engineering & SEO Optimization by Dan King Digital

10-49

$ Min. $5,000+

$50 - $99 / hr

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</> React </> Next.js </> CSS Modules +10

E-Commerce Development Web Design Website Optimization +1

dan-king-digi...

Web Development +2

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Saint IT Ltd

Colchester

Top-Rated Custom Web Engineering & SEO Optimization by Saint IT Ltd

50-249

$ Min. $10,000+

$100 - $149 / hr

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</> React </> Next.js </> Node.js +10

Mobile App Development Web Development

saint-it.com

Web Development +1

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Honey & Jam

Oundle

Top-Rated Custom Web Engineering & SEO Optimization by Honey & Jam

10-49

$ Min. $10,000+

$50 - $99 / hr

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</> React </> Next.js </> Node.js +8

Custom Software Development Website Optimization Web Development +1

honey-jam.com

Web Development +1

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Evident BD Ltd

Grays, United Kingdom

Client-Centric Website, Mobile App & Custom Software Solutions

10 - 49

$ Min. $5,000+

$50 - $99 / hr

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</> React </> Node.js </> JavaScript +3

Mobile App Development Custom Software Development Application Testing +6

evidentbd.co.uk

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Technology Guide & Market Insights

Hiring JavaScript Agencies: Complete Guide & Overview

JavaScript is a general-purpose programming language used extensively for web development. It runs directly in web browsers for interactive interfaces and can also run on servers, desktop applications, mobile applications, and developer tools. JavaScript supports event-driven and asynchronous programming and has a large ecosystem of libraries and frameworks. It is a core technology for frontend development and is also widely used in full-stack applications through runtimes such as Node.js.

For projects using JavaScript, teams should consider the application's requirements, expected scale, integration points, deployment environment, testing approach, and long-term maintenance. Choosing the technology should also take into account the existing skills of the development team and the libraries or services already used by the product.