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Learn JavaScript with guided tests and flashcards

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DOA adjusts your screen display based on your glasses prescription so you can use your computer comfortably without them.
Which is more popular?
Based on our record, Learn JavaScript seems to be more popular. It has been mentioned 48 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | learnjavascript.online | deviceopticalaid.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Learn JavaScript yet.
A display accessibility app that uses eyeglass prescriptions to modify the screen, basically making the screen act like glasses, eliminating the need to wear them while using your device. Suitable for browsing, working and more. Also has support for color blindness to help you deutran, tritan or...
What each product offers, as listed by its team.


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Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
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Learn JAVASCRIPT in just 5 MINUTES (2020)
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Learn JavaScript and DOA - Device Optical Aid.
DOA - Device Optical Aid's answer:
Unlike other accessibility tools that magnifies the screen, DOA applies an overlay based on glasses prescription to sharpen the screen, and basically make the screen act like glasses
DOA - Device Optical Aid's answer:
No direct competitor exists yet, so DOA is the clear choice in case glasses might be lost, broken, or you are just simply tired of wearing them.
DOA - Device Optical Aid's answer:
People suffering from nearsightedness, farsightedness, astigmatism, presbyopia(the need for reading glasses, above +40 years old) and even binocular imbalance are the primary benefiters for this software, alongside colorblind people.
DOA - Device Optical Aid's answer:
Built by a single student, the idea emerged on november 2024, following the need to fix a problem commonly encountered. The software went through a lot of trial and error; failed android release, failed browser extension development, and now a final release as a desktop app. More info in the roadmap!
Share your experience with using Learn JavaScript and DOA - Device Optical Aid. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I haven't done this course, but I have been programming with Javascript for about ~1.5years and can build things with React, the best course I found, and I bet it would translate to angular, is learnjavascript.online. Another resource... Source: over 3 years ago
The Jad Joubran courses on the other hand really upped my skill level and helped me make the jump from passive learning, exercises and very small projects to making legitimate web apps. That was probably the biggest/scariest jump I've... Source: over 3 years ago
Hi everyone! I'm in the very early stages of creating an interactive course and I would like to hear your thoughts on them. So far I've come across Scrimba and Jad Joubran's learn X series of sites (learnjavascript.online,... Source: over 3 years ago
Tracking DOA - Device Optical Aid since Jun 2026.
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