The following table provides summary statistics for contract job vacancies advertised in Wimbledon with a requirement for JavaScript skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JavaScript over the 3 months to 23 June 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

JavaScript (including ECMAScript)
London / Wimbledon
3 months to
23 Jun 2017
Same period 2016 Same period 2015
Rank 3 3 4
Rank change year-on-year 0 +1  
Contract jobs citing JavaScript 2 5 2
As % of all contract IT jobs advertised in Wimbledon 25.00% 23.81% 18.18%
As % of the Programming Languages category 40.00% 50.00% 33.33%
Number of daily rates quoted 2 5 1
Median daily rate £338 £400 £338
Median daily rate % change year-on-year -15.62% +18.51%  
UK excluding London median daily rate £375 £363 £350
% change year-on-year +3.44% +3.57%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £43.39 £37.50 £40.00
% change year-on-year +15.70% -6.25%  

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

Contract Programming Language Skills
Wimbledon
Contract job vacancies with a requirement for programming language skills 5 10 6
As % of all contract IT job vacancies advertised in Wimbledon 62.50% 47.62% 54.55%
Number of daily rates quoted 4 9 4
Median daily rate £338 £425 £338
Median daily rate % change year-on-year -20.58% +25.92%  
90% offered a daily rate of more than £315 £393 £325
10% offered a daily rate of more than £500 £448 £375
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £42.50 £37.50 £36.50
% change year-on-year +13.33% +2.73%  

JavaScript
Job Vacancy Trend in Wimbledon

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

Job vacancy trend for JavaScript in Wimbledon

JavaScript
Contractor Daily Rate Trend in Wimbledon

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JavaScript in Wimbledon.

Contractor daily rate trend for JavaScript in Wimbledon

For the 6 months to 23 June 2017, IT contractor jobs citing JavaScript also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Wimbledon region with a requirement for JavaScript.

1 6 (85.71%) CSS
2 5 (71.43%) Java
3 4 (57.14%) PL/SQL
3 4 (57.14%) SQL
3 4 (57.14%) Struts
3 4 (57.14%) Oracle
3 4 (57.14%) VSS/SourceSafe
3 4 (57.14%) Spring
3 4 (57.14%) Ajax
3 4 (57.14%) Hibernate
3 4 (57.14%) Stakeholder Engagement
3 4 (57.14%) Analytical Skills
4 3 (42.86%) HTML
4 3 (42.86%) HTML5
5 2 (28.57%) Risk Management
6 1 (14.29%) Publishing
6 1 (14.29%) MVC
6 1 (14.29%) SharePoint
6 1 (14.29%) Adobe
6 1 (14.29%) .NET
6 1 (14.29%) PHP
6 1 (14.29%) Scrum
6 1 (14.29%) e-Learning
6 1 (14.29%) SCORM
6 1 (14.29%) Web Design
6 1 (14.29%) Web Development
6 1 (14.29%) Adobe Captivate
6 1 (14.29%) Learning Management System
6 1 (14.29%) SaaS
6 1 (14.29%) PaaS

JavaScript
Co-occurring IT Skills in Wimbledon 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:

Application Platforms
1 1 (14.29%) SharePoint
Applications
1 1 (14.29%) Adobe Captivate
Cloud Services
1 1 (14.29%) IaaS
1 1 (14.29%) PaaS
1 1 (14.29%) SaaS
Development Applications
1 4 (57.14%) VSS/SourceSafe
General
1 1 (14.29%) Publishing
Job Titles
1 6 (85.71%) Developer
2 4 (57.14%) Java Developer
2 4 (57.14%) Java Software Developer
2 4 (57.14%) Software Developer
3 1 (14.29%) Author
3 1 (14.29%) e-Learning Developer
3 1 (14.29%) Technical Author
3 1 (14.29%) Web Developer
Libraries, Frameworks & Software Standards
1 6 (85.71%) CSS
2 4 (57.14%) Ajax
2 4 (57.14%) Hibernate
2 4 (57.14%) Spring
2 4 (57.14%) Struts
3 3 (42.86%) HTML
3 3 (42.86%) HTML5
4 1 (14.29%) .NET
Miscellaneous
1 4 (57.14%) Analytical Skills
2 1 (14.29%) e-Learning
2 1 (14.29%) Learning Management System
2 1 (14.29%) SCORM
Processes & Methodologies
1 4 (57.14%) Stakeholder Engagement
2 2 (28.57%) Risk Management
3 1 (14.29%) MVC
3 1 (14.29%) Scrum
3 1 (14.29%) Web Design
3 1 (14.29%) Web Development
Programming Languages
1 5 (71.43%) Java
2 4 (57.14%) PL/SQL
2 4 (57.14%) SQL
3 1 (14.29%) PHP
Vendors
1 4 (57.14%) Oracle
2 1 (14.29%) Adobe