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About JavaScript Validator
JavaScript Validator is a free online tool that checks JavaScript source code for syntax errors. The validation process runs directly in your browser without sending the code to a server.
How To Use
- Paste your JavaScript code into the input box.
- Click Validate JavaScript.
- Review the validation result.
- If a syntax error is detected, review the reported error message.
Features
- JavaScript syntax validation.
- Browser-based processing.
- Syntax error detection.
- Error message reporting.
- Character and line statistics.
- Copy validation result.
- No registration required.
- No server-side code upload required.
Frequently Asked Questions
What does the JavaScript Validator check?
It checks whether the supplied JavaScript source can be parsed as valid JavaScript syntax by the browser.
Does the validator execute my JavaScript?
No. The tool uses the browser's JavaScript parser to check syntax. The supplied program is not intentionally executed by the tool.
Is my JavaScript uploaded to a server?
No. Validation is performed directly in the browser using client-side JavaScript.
Can it detect every JavaScript problem?
The validator focuses on JavaScript syntax. Runtime errors, logic errors, API behavior, browser compatibility and application-specific problems may require additional testing.
Is the JavaScript Validator free?
Yes. The tool is free to use and does not require registration.