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JavaScript JavaScript Basics (Retired) Creating Reusable Code with Functions Variable Scope

Timothy Huxley
PLUS
Timothy Huxley
Courses Plus Student 4,781 Points
Posted by Timothy Huxley
Timothy Huxley
Courses Plus Student 4,781 Points

Are there any tools to give us warnings and help us avoid risky code?

(e.g. if I forget to declare a var in a function or use == instead of ===)

2 Answers

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

There are several code-checking tools for JavaScript.

Any search engine will easily turn up several. But these two are by far the most popular:

Timothy Huxley
Timothy Huxley
Courses Plus Student 4,781 Points
Timothy Huxley
Timothy Huxley
Courses Plus Student 4,781 Points

Thanks! I appreciate a recommendation over a search.

eck
eck
43,038 Points
eck
eck
43,038 Points

ESLint is another popular linter that has a pretty complete set of rules created and maintained by Air BnB.

Here you can learn about what rules they use and why: https://github.com/airbnb/javascript Here you can learn about how to set up different versions: https://www.npmjs.com/package/eslint-config-airbnb