jQuery to React Migration · Derry
jQuery to React Migration in Derry
Moving Derry applications from jQuery to React, where the two disagree about who owns the page. jQuery changes elements directly; React renders them from state and expects to be the only thing doing so — and where both touch the same part of the page, the result is behaviour that fails intermittently and resists debugging.
Why this comes up
The problem
React components were introduced alongside existing scripts, and both are modifying the same elements.
What you get
What we deliver
- Boundaries drawn so each region of the page has one owner
- Migration sequenced by region rather than attempting the whole page at once
- State moved out of the DOM, since jQuery code often stores it there
- Plugins replaced rather than wrapped, where they manipulate elements React renders
- Event handling rationalised, as delegated handlers can fire on rerendered elements
- Global scripts audited, because they frequently reach across the entire page
Want this scoped for your business in Derry?
Thirty minutes, no charge, no sales script. You leave with a written summary of what jquery to react migration would actually involve — whether or not you use us.
Working in Derry
Northern Ireland
The city is Derry to most of its population and Londonderry in official use, and which name you lead with is read as a statement here — we use Derry in customer-facing copy and note both where a document has to be formal.
Cross-border trading systems for businesses working into Donegal, and manufacturing tooling for the north west.
Sectors we work with in Derry
- Manufacturing
- Healthcare
- Higher Education
- Digital
- Tourism
What we work with
Technologies and platforms
- React
- TypeScript
- jQuery
- Vite
Who we work with
Industries we serve
- Retail
- Financial services
- SaaS businesses
- Media companies
- Professional services
Why us
Why Derry businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in Derry
Looking for the full picture? See our jQuery to React Migration services, everything we do in Derry or browse everything we do.
jQuery to React Migration in Derry — common questions
- Why can they not share the page?
- Because React rerenders from its own model of what should be there. Anything jQuery changed directly is discarded on the next render, and the failure is intermittent — it depends on timing, which makes it far harder to diagnose than an outright error.
- How is incremental migration done safely?
- By region, with strict boundaries. A component owns its part of the page completely and legacy scripts own theirs, with communication through explicit events rather than by reaching into each other's elements — and enforcing that discipline is most of the work.
- What about jQuery plugins?
- Most need replacing rather than wrapping. A plugin that builds its own markup fights React's rendering, and although wrapping is possible for simple cases, it produces code that breaks in ways future developers cannot reasonably be expected to predict.
- Where does the state live?
- It has to move. jQuery applications commonly keep state in the page itself — a class name, a data attribute, whether an element is visible — and React needs that in its own model, so identifying every place the DOM is being used as storage is an early and unglamorous task.
- Do you work with businesses across County Londonderry?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout Northern Ireland, including Derry and the surrounding County Londonderry area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of Derry businesses do you usually work with?
- Cross-border trading systems for businesses working into Donegal, and manufacturing tooling for the north west. Beyond that we work across Manufacturing, Healthcare, Higher Education, Digital and Tourism.
- Do you cover the areas around Derry?
- Yes — we work throughout Northern Ireland, including Belfast, Lisburn. Derry is an urban area of roughly 85,000+, and we take on work across the wider County Londonderry region rather than the city boundary alone.
Talk to us about jQuery to React Migration in Derry
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise