CodeFactor.io
JSLint
Codacy
ESLint
Coala
textlint
Prettier
Online Javascript Validator validates javascript code and find errors and warnings that can be fixed. See real time validation of your javascript code as you type.

Codacy
Graphite
CodeClimate
SonarQube
GitHub
CodeFactor.io
codebeat
SideCI is static code analysis Continous Integration service. Driven by GitHub Pull Requests, Analyze And Comment Violation Automatically. Supports Ruby, PHP, and JavaScript.

Which is more popular?
Based on our record, Javascript Validator seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | beautifytools.com | sideci.com |
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What each product offers, as listed by its team.

No features have been listed yet.
Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Javascript Validator and SideCI. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Try pasting your code into a validator to see if you don't have a typo somewhere: https://beautifytools.com/javascript-validator.php. Source: over 4 years ago
So everything works fine the way I see it and that error only comes up after a few clicks. Since I'm not a js wizard I did put your script code into a javascript validator and it looks like you're missing a couple of semi colons here and... Source: almost 5 years ago
Tracking SideCI since Mar 2021.
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JSLint is a JavaScript program that looks for problems in JavaScript programs.
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Graphite is a highly scalable real-time graphing system.
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Code Climate provides automated code review for your apps, letting you fix quality and security issues before they hit production. We check every commit, branch and pull request for changes in quality and potential vulnerabilities.
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The fully pluggable JavaScript code quality tool
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