JavaScript

Check JS

Quick hints for risky or unusual JavaScript patterns.

What does this tool do?

This tool looks for simple JavaScript issues such as eval(), document.write(), console.log(), var and loose equality checks.

HTTP/HTTPS up to about 1.5 MB
Allowed: .js, .mjs, .txt

Note: If URL and upload are both provided, the upload wins. Content is processed as UTF-8.

Hints

Paste JavaScript and start the check.