Code Validators

HTML W3C Validator

The HTML Markup Validator is a free service by W3C that helps check the validity of Web documents. The first online HTML validation service was created by Dan Connolly and Mark Gaither. The W3C Markup Validation Service was created by Gerald Oskoboiny.

CSS W3C Validators

The W3C CSS Validation Service is a free software created by the W3C to help Web designers and Web developers check Cascading Style Sheets (CSS). It was first written by Philippe Le Hégaret and Sijtsche Smeman.

JSHint

JSHint is a static code analysis tool for JavaScript. It is is a community-driven tool that detects errors and potential problems in JavaScript code. Originating from the JSLint project in 2010, JSHint has been maintained initially by

• Douglas Crockford
• Anton Kovalyov
• Mike Sherov

and now by

• Rick Waldron
• Caitlin Potter
• Mike Pennisi
• Luke Page

CPP Lint

Cpplint is a static code checker for C++. It's a command-line tool to check C/C++ files for style issues following Google's C++ style guide. Cpplint is developed and maintained by Google Inc. at google/styleguide. A CppLint online application has been created by George Ivanov in 2013.

Links

• JSHint and jQuery: '$' is not defined, by stackoverflow