CodeFactor.io
JSLint
Codacy
Coala
textlint
Prettier
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.

Prettier
CodeClimate
Tailwind CSS
SonarQube
Next.js
VS Code
Codacy
The fully pluggable JavaScript code quality tool

Which is more popular?
Based on our record, ESLint seems to be a lot more popular than Javascript Validator. While we know about 302 links to ESLint, 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 | eslint.org |
| Pricing | — | |
| Company | — | Startup from the United States |
| Listed in |
What each product offers, as listed by its team.

No features have been listed yet.
Possible disadvantages
Walkthroughs and reviews on video.
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ESLint Quickstart - find errors automatically
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How often each product is chosen within a category, 0–100% relative to the other.

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External articles and on-site reviews we used to compare the two products.

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You can use ESLint through a supported IDE such as VS Code, Eclipse, and IntelliJ IDEA or integrate it with your CI pipelines. Moreover, you can install it locally using a package manager like npm, yarn, npx, etc.
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
Unfortunately, the damage is done! This can lead to unstable code, silent bugs, and technical debt that quietly builds up. That's exactly what the Linter, ESLint, is supposed to catch beforehand. - Source: dev.to / 1 day ago
It's very important to me that the code I write always meets the necessary standards. Naturally, for this I had to use tools like ESLint or Oxlint. - Source: dev.to / 23 days ago
So we wrote our own ESLint rules. Most of them can also run on oxlint. - Source: dev.to / about 2 months ago
When comparing Javascript Validator and ESLint, you can also consider the following products.

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JSLint is a JavaScript program that looks for problems in JavaScript programs.
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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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Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.
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A utility-first CSS framework for rapidly building custom user interfaces.
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