When comparing W3Schools vs 30 seconds of code, the Slant community recommends 30 seconds of code for most people. In the question“What are the best resources to learn JavaScript?” 30 seconds of code is ranked 4th while W3Schools is ranked 23rd. The most important reason people chose 30 seconds of code is:
Main selling point of the project is that you can learn some useful techniques and tricks in 30 seconds or less.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to learn
All the tutorials are written in a straightforward and easy to understand way.
Pro Built in editor
Almost every example has a "try it yourself" button which opens up an editor in a new tab. It allows you to play with the example code and see how it works.
Pro Well organized tutorials
All of the lessons are separated into their own pages, which makes it easy to learn about specific concepts.
Pro Great source from Google search's perspective
Pro Short and sweet
Main selling point of the project is that you can learn some useful techniques and tricks in 30 seconds or less.
Pro Lots of examples
Over 300 code snippets.
Pro ES6
Uses the latest stable features of ES6 to teach developers how to write modern code.
Pro Functional-style code
The project's code examples follow best practices for functional programming.
Cons
Con Outdated practices / problem solutions
The practices that are shown to solve the problems at hand are rarely, if at all, updated. Usually, their tutorials and learning material is updated only after they see their profits drop.
Con Doesn't care about teaching right
There are multiple errors in the data they show. Although the solutions they show work, they will lead to unmaintainable code. That happens even when the maintainable code alternatives are as easy or accessible to new programmers as the alternatives.
Con Certifications not recognized
Many professionals in IT agree that w3s certifications are not recognized by them and are deemed useless. Good luck finding any respectable professional that accepts a w3s certification.
Con It is for profit
What defines what goes is and what gets fixed on w3schools is what gives them profit and what doesn't (through their ads system).
Con Written tutorials only
While many learning resources offer a mixture of media in their courses (such as videos, challenges etc.), w3schools offers only written tutorials and code editors. This makes w3schools more beneficial as a quick reference rather than a primary learning resource.
Con Not production-ready
A few of the code examples are not ready for production, but they can easily be made into production-ready methods with some tweaks. The library has a stable release as of August 2018.