The following table provides summary statistics for contract job vacancies advertised in Preston 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 30 April 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)
Lancashire / Preston
3 months to
30 Apr 2017
Same period 2016 Same period 2015
Rank 26 6 20
Rank change year-on-year -20 +14  
Contract jobs citing JavaScript 4 16 2
As % of all contract IT jobs advertised in Preston 2.23% 12.80% 1.85%
As % of the Programming Languages category 11.76% 35.56% 4.17%
Number of daily rates quoted 3 10 1
Median daily rate £313 £360 £538
Median daily rate % change year-on-year -13.19% -33.02%  
UK excluding London median daily rate £375 £355 £340
% change year-on-year +5.63% +4.41%  
Number of hourly rates quoted 0 3 0
Median hourly rate - £47.00 -
UK excluding London median hourly rate £42.50 £32.50 £37.50
% change year-on-year +30.76% -13.33%  

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 Preston with a requirement for programming language skills.

Contract Programming Language Skills
Preston
Contract job vacancies with a requirement for programming language skills 34 45 48
As % of all contract IT job vacancies advertised in Preston 18.99% 36.00% 44.44%
Number of daily rates quoted 13 19 29
Median daily rate £313 £345 £375
Median daily rate % change year-on-year -9.42% -8.00%  
90% offered a daily rate of more than £288 £300 £316
10% offered a daily rate of more than £351 £450 £538
UK excluding London median daily rate £390 £375 £350
% change year-on-year +4.00% +7.14%  
Number of hourly rates quoted 14 13 6
Median hourly rate £42.50 £41.50 £37.00
Median hourly rate % change year-on-year +2.40% +12.16%  
UK excluding London median hourly rate £42.50 £38.00 £36.00
% change year-on-year +11.84% +5.55%  

JavaScript
Job Vacancy Trend in Preston

The job posting trend of jobs advertised in Preston 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 Preston

JavaScript
Contractor Daily Rate Trend in Preston

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

Contractor daily rate trend for JavaScript in Preston

JavaScript
Contractor Hourly Rate Trend in Preston

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing JavaScript in Preston.

Contractor hourly rate trend for JavaScript in Preston

For the 6 months to 30 April 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 Preston region with a requirement for JavaScript.

1 11 (100.00%) HTML
2 9 (81.82%) CSS
3 7 (63.64%) C#
3 7 (63.64%) .NET
3 7 (63.64%) MVC
4 6 (54.55%) ASP.NET
5 5 (45.45%) Agile Software Development
5 5 (45.45%) AngularJS
6 4 (36.36%) Front End Development
6 4 (36.36%) ASP.NET MVC
6 4 (36.36%) HTML5
6 4 (36.36%) SQL Server
6 4 (36.36%) Visual Studio
6 4 (36.36%) SQL
7 3 (27.27%) Web Services
7 3 (27.27%) XML
7 3 (27.27%) Microsoft
7 3 (27.27%) SQL Server 2008
7 3 (27.27%) Git (software)
7 3 (27.27%) .NET Framework
7 3 (27.27%) Greenfield Project
7 3 (27.27%) KnockoutJS
7 3 (27.27%) ASP.NET Web API
8 2 (18.18%) Node.js
8 2 (18.18%) CSS3
8 2 (18.18%) SDLC
8 2 (18.18%) gulp
8 2 (18.18%) Twitter Bootstrap
8 2 (18.18%) Relational Database
8 2 (18.18%) SQL Server Management Studio (SSMS)

JavaScript
Co-occurring IT Skills in Preston 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:

Applications
1 1 (9.09%) Fireworks
1 1 (9.09%) Photoshop
Database & Business Intelligence
1 4 (36.36%) SQL Server
2 3 (27.27%) SQL Server 2008
3 2 (18.18%) MongoDB
3 2 (18.18%) RDBMS
3 2 (18.18%) Relational Database
4 1 (9.09%) SQL Server 2005
4 1 (9.09%) SQL Server 2012
4 1 (9.09%) SQL Server Integration Services
4 1 (9.09%) SQL Server Reporting Services
Development Applications
1 4 (36.36%) Visual Studio
2 3 (27.27%) Git (software)
3 2 (18.18%) gulp
3 2 (18.18%) SQL Server Management Studio (SSMS)
3 2 (18.18%) Team Foundation Server
4 1 (9.09%) Balsamiq Mockups
4 1 (9.09%) JIRA
4 1 (9.09%) webpack
General
1 2 (18.18%) Banking
1 2 (18.18%) Finance
1 2 (18.18%) Telecoms
Job Titles
1 11 (100.00%) Developer
2 7 (63.64%) .NET Developer
3 3 (27.27%) Front End Developer (Client-Side Developer)
4 2 (18.18%) Angular Developer
4 2 (18.18%) HTML Developer
4 2 (18.18%) JavaScript Developer
4 2 (18.18%) Web Developer
5 1 (9.09%) .NET Web Developer
5 1 (9.09%) ASP.NET Developer
5 1 (9.09%) ASP.NET MVC Developer
5 1 (9.09%) C# .NET Developer
5 1 (9.09%) C# Developer
5 1 (9.09%) HTML CSS Developer
5 1 (9.09%) Senior ASP.NET Developer
5 1 (9.09%) Senior ASP.NET MVC Developer
5 1 (9.09%) Senior C# .NET Developer
5 1 (9.09%) Senior C# ASP.NET Developer
5 1 (9.09%) Senior C# Developer
5 1 (9.09%) Senior Developer
5 1 (9.09%) Senior Web Developer
Libraries, Frameworks & Software Standards
1 11 (100.00%) HTML
2 9 (81.82%) CSS
3 7 (63.64%) .NET
4 6 (54.55%) ASP.NET
5 5 (45.45%) AngularJS
6 4 (36.36%) ASP.NET MVC
6 4 (36.36%) HTML5
7 3 (27.27%) .NET Framework
7 3 (27.27%) ASP.NET Web API
7 3 (27.27%) KnockoutJS
7 3 (27.27%) Web Services
7 3 (27.27%) XML
8 2 (18.18%) Ajax
8 2 (18.18%) CSS3
8 2 (18.18%) jQuery
8 2 (18.18%) Node.js
8 2 (18.18%) RESTful
8 2 (18.18%) SOAP
8 2 (18.18%) WCF
8 2 (18.18%) WinForms
Miscellaneous
1 3 (27.27%) Greenfield Project
2 1 (9.09%) Management Information System
2 1 (9.09%) User Experience
Operating Systems
1 2 (18.18%) Windows
Processes & Methodologies
1 7 (63.64%) MVC
2 5 (45.45%) Agile Software Development
3 4 (36.36%) Front End Development
4 2 (18.18%) OO
4 2 (18.18%) OOD
4 2 (18.18%) SDLC
4 2 (18.18%) Software Engineering
4 2 (18.18%) TDD
4 2 (18.18%) Unit Testing
4 2 (18.18%) Web Development
5 1 (9.09%) Cross-Browser Compatibility
5 1 (9.09%) MVVM
5 1 (9.09%) Prototyping
5 1 (9.09%) Responsive Web Design
5 1 (9.09%) Web Design
5 1 (9.09%) Wireframes
Programming Languages
1 7 (63.64%) C#
2 4 (36.36%) SQL
3 2 (18.18%) T-SQL
4 1 (9.09%) VB.NET
4 1 (9.09%) VBScript
Qualifications
1 2 (18.18%) Degree
1 2 (18.18%) Microsoft Certification
Vendors
1 3 (27.27%) Microsoft