The following table provides summary statistics for permanent job vacancies advertised in Romford with a requirement for JavaScript skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited JavaScript over the 3 months to 27 June 2017 with a comparison to the same period in the previous 2 years.

JavaScript (including ECMAScript)
London / Romford
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 9 19 7
Rank change year-on-year +10 -12  
Permanent jobs citing JavaScript 5 1 1
As % of all permanent IT jobs advertised in Romford 15.15% 2.00% 4.17%
As % of the Programming Languages category 29.41% 33.33% 9.09%
Number of salaries quoted 5 1 1
Median salary £47,500 £55,000 £27,500
Median salary % change year-on-year -13.63% +100.00%  
UK excluding London median salary £40,000 £40,000 £39,000
% change year-on-year - +2.56%  

JavaScript is in the programming language skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Romford with a requirement for programming language skills.

Programming Language Skills
Romford
Permanent job vacancies with a requirement for programming language skills 17 3 11
As % of all permanent IT job vacancies advertised in Romford 51.52% 6.00% 45.83%
Number of salaries quoted 17 3 10
Median salary £45,000 £82,500 £38,750
Median salary % change year-on-year -45.45% +112.90%  
90% offered a salary of more than £32,750 £55,000 £27,500
10% offered a salary of more than £62,500 £52,500 £82,500
UK excluding London median salary £42,500 £41,000 £40,000
% change year-on-year +3.65% +2.50%  

JavaScript
Job Vacancy Trend in Romford

The job posting trend of jobs advertised in Romford citing JavaScript as a proportion of all permanent or contract IT jobs with a match in the Programming Languages category.

Job vacancy trend for JavaScript in Romford

JavaScript
Salary Trend in Romford

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing JavaScript in Romford.

Salary trend for JavaScript in Romford

JavaScript
Salary Histogram in Romford

The salary distribution of IT jobs citing JavaScript in Romford over the 3 months to 27 June 2017.

Salary histogram for JavaScript in Romford

For the 6 months to 27 June 2017, IT jobs citing JavaScript also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the Romford region with a requirement for JavaScript.

1 5 (100.00%) C#
1 5 (100.00%) .NET
1 5 (100.00%) ASP.NET
1 5 (100.00%) AngularJS
2 4 (80.00%) OO
2 4 (80.00%) MVC
2 4 (80.00%) SQL Server
3 3 (60.00%) HTML
3 3 (60.00%) CSS
3 3 (60.00%) Twitter Bootstrap
4 2 (40.00%) ASP.NET Web API
4 2 (40.00%) DevOps
4 2 (40.00%) Don't repeat yourself (DRY)
4 2 (40.00%) SOLID
4 2 (40.00%) Angular 2
4 2 (40.00%) Greenfield Project
4 2 (40.00%) Scrum
4 2 (40.00%) SOAP
4 2 (40.00%) Web Services
4 2 (40.00%) XML
4 2 (40.00%) Windows
4 2 (40.00%) OOP
4 2 (40.00%) Finance
4 2 (40.00%) Agile Software Development
4 2 (40.00%) TDD
4 2 (40.00%) Artificial Intelligence
4 2 (40.00%) NHibernate
4 2 (40.00%) Web Development
4 2 (40.00%) Business Development
4 2 (40.00%) .NET Framework

JavaScript
Co-occurring IT Skills in Romford by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Cloud Services
1 2 (40.00%) Amazon AWS
1 2 (40.00%) Cloud Computing
1 2 (40.00%) Microsoft Azure
Database & Business Intelligence
1 4 (80.00%) SQL Server
2 1 (20.00%) SQL Server 2005
Development Applications
1 2 (40.00%) Git (software)
1 2 (40.00%) Team Foundation Server
2 1 (20.00%) Visual Studio
General
1 2 (40.00%) Finance
Job Titles
1 5 (100.00%) Developer
2 2 (40.00%) .NET Developer
2 2 (40.00%) Agile .NET Developer
2 2 (40.00%) Agile Developer
2 2 (40.00%) C# Developer
2 2 (40.00%) C# Web Developer
2 2 (40.00%) JavaScript Developer
2 2 (40.00%) Machine Learning Developer
2 2 (40.00%) Web Developer
3 1 (20.00%) Senior C# Developer
3 1 (20.00%) Senior Developer
3 1 (20.00%) Senior JavaScript Developer
3 1 (20.00%) Senior Web Developer
Libraries, Frameworks & Software Standards
1 5 (100.00%) .NET
1 5 (100.00%) AngularJS
1 5 (100.00%) ASP.NET
2 3 (60.00%) CSS
2 3 (60.00%) HTML
2 3 (60.00%) Twitter Bootstrap
3 2 (40.00%) .NET Framework
3 2 (40.00%) Angular 2
3 2 (40.00%) ASP.NET MVC
3 2 (40.00%) ASP.NET Web API
3 2 (40.00%) Entity Framework
3 2 (40.00%) KnockoutJS
3 2 (40.00%) NHibernate
3 2 (40.00%) Node.js
3 2 (40.00%) RESTful
3 2 (40.00%) SOAP
3 2 (40.00%) WCF
3 2 (40.00%) Web Services
3 2 (40.00%) XML
4 1 (20.00%) jQuery
Miscellaneous
1 2 (40.00%) Greenfield Project
Operating Systems
1 2 (40.00%) Windows
Processes & Methodologies
1 4 (80.00%) MVC
1 4 (80.00%) OO
2 2 (40.00%) Agile Software Development
2 2 (40.00%) Artificial Intelligence
2 2 (40.00%) Business Development
2 2 (40.00%) Continuous Integration
2 2 (40.00%) DevOps
2 2 (40.00%) Don't repeat yourself (DRY)
2 2 (40.00%) Kanban
2 2 (40.00%) Machine Learning
2 2 (40.00%) OOP
2 2 (40.00%) Scrum
2 2 (40.00%) SOLID
2 2 (40.00%) TDD
2 2 (40.00%) Web Development
3 1 (20.00%) Validation
3 1 (20.00%) Web Design
Programming Languages
1 5 (100.00%) C#