Remediation Without Regressions
Fix issues and verify nothing new broke.
Remediation Without Regressions is a free Web Accessibility Academy lesson on CoddyKit — lesson 4 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Web Accessibility Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Fixing One Thing Can Break Another
A careless accessibility fix can quietly break a working feature. Remediation means repairing issues without introducing new regressions. 🔧
Reproduce Before You Repair
First reproduce the bug exactly as reported. If you cannot make it fail on demand, you cannot prove your fix truly worked.
Prefer Native HTML First
The safest fix is usually less code. Swapping a fake div for a real button restores focus, keys, and roles for free.
<!-- Replace this -->
<div onclick="save()">Save</div>
<!-- With this -->
<button onclick="save()">Save</button>Change the Smallest Surface
Touch only what the issue needs. A tight, scoped change is far easier to review and far less likely to ripple into other features.
Retest With the Same Tools
Verify the fix with the same keyboard and screen reader that found it. Reproduce the original steps and confirm the barrier is gone.
Check the Surrounding Area
Look beyond the fixed element. A new aria-label or moved focus can change how nearby controls announce, so retest the whole flow.
Watch for Visual Regressions
Restoring a focus outline or contrast can shift the layout. Confirm the visual design still holds at normal and zoomed sizes.
Lock the Fix With a Test
Add an automated check, like an axe-core assertion, so the same issue fails the build if anyone reintroduces it later.
const results = await new AxeBuilder({ page }).analyze();
expect(results.violations).toEqual([]);Quick Check
One habit best prevents a fix from causing a regression.
Never Hide a Problem to Pass
Do not use aria-hidden or display none to silence a scanner. That hides the symptom from tools while real users still hit the barrier.
Document What Changed
Note the fix in the pull request and link the original issue. A clear changelog helps reviewers and future you understand the why.
Verify in the Real Environment
Confirm the fix on a staging build, not just locally. Real environment testing catches caching, bundling, and config surprises early.
Recap: Safe Remediation
You reproduce, fix with the smallest native change, retest the flow, guard it with a test, and verify in staging. No regressions. 🎉
Frequently asked questions
Is the “Remediation Without Regressions” lesson free?
Yes — the full text of “Remediation Without Regressions” is free to read here on the web, and the Web Accessibility Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Web Accessibility Academy course, upgrade to CoddyKit PRO.
What will I learn in “Remediation Without Regressions”?
Fix issues and verify nothing new broke. You practise Web Accessibility Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Web Accessibility Academy?
No prior experience is required. Web Accessibility Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 4 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “Remediation Without Regressions” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Web Accessibility Academy lesson?
Yes. Every Web Accessibility Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Building a Manual Audit Workflow
- Severity and Impact Triage
- Writing Bug Reports Developers Can Act On
- Remediation Without Regressions