eslint-plugin-html enhances ESLint's capabilities by enabling linting of JavaScript code embedded within HTML files. It extracts JavaScript from <script> tags and attributes (like onclick), applying ESLint's rules for consistent style and error detection. This plugin is essential for projects utilizing inline JavaScript in HTML, promoting code quality and maintainability by ensuring that even dynamically generated or embedded scripts adhere to project standards defined within the ESLint configuration. It simplifies managing JavaScript code scattered across HTML documents.