CodeFactor.io
JSLint
Codacy
ESLint
Coala
textlint
HTML-Cleaner.com
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.

ESLint
Tailwind CSS
VS Code
Next.js
Angular.io
stylelint
GitHub
An opinionated code formatter

Which is more popular?
Based on our record, Prettier seems to be a lot more popular than Javascript Validator. While we know about 307 links to Prettier, we've tracked only 2 mentions of Javascript Validator.
Website, pricing, platforms and company facts side by side.
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JV
Javascript Validator
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| Website | beautifytools.com | prettier.io |
| Pricing | — | |
| Company | — | Startup from the United States |
| Listed in |
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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
This is precisely the Formatter's role: to settle this kind of debate, once and for all. With Prettier (or an equivalent), a configuration file is all it takes to close the subject:. - Source: dev.to / 1 day ago
For static analysis there's PHPStan for PHP and Mypy for Python. For formatting, Prettier and gofmt are the cheapest guardrail there Is, with zero excuse not to run one. For security, Semgrep Covers the same principle at higher stakes. - Source: dev.to / about 1 month ago
Prettier - an opinionated code formatter for many languages, including TypeScript and JavaScript. - Source: dev.to / 2 months ago
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