Leading '.' in `classList.add` or `classList.remove`

User guide

• Getting Started

• Api

  • Using the API

• Concepts

  • Configurations
  • Connectors
  • Formatters
  • Hints
  • Parsers

• Configurations

  • webhint development configuration
  • webhint recommended web configuration
  • webhint's accessibility configuration
  • webhint's recommended progressive web apps configuration

• Configuring webhint

  • Configure webhint in your project
  • Browser configuration
  • Hints timeout
  • Ignoring domains
  • Using relative resources
  • Website authentication

• Connectors

  • jsdom
  • Local
  • Puppeteer

• Development flow integration

  • Development flow integration
  • Test a local server
  • Travis CI and Azure Web Apps
  • Using CircleCI and webhint
  • Using Travis CI and webhint

• Extensions

  • Webhint DevTools integration
  • Webhint Visual Studio Code extension

• Formatters

  • Codeframe
  • Excel
  • HTML
  • JSON
  • Stylish
  • Summary

• Hints

  • Avoid CSS limits
  • Avoid HTTP redirects
  • axe accessibility check
  • Babel configuration hint set
  • Compatibility of CSS, HTML and JavaScript features
  • Correct `Content-Type` header
  • Correct manifest extension
  • Correct viewport
  • Detect CSS Reflows
  • Disallowed HTTP headers
  • External links disown opener
  • Has web app manifest
  • Highest document mode
  • HTTP cache
  • Leading '.' in `classList.add` or `classList.remove`
  • Manifest has name
  • Minify JavaScript
  • Modern DOCTYPE
  • No `createElement` with SVG
  • No `P3P` headers
  • No broken links
  • No byte-order mark
  • No Inline CSS Styles
  • No protocol-relative URLs
  • No small error pages
  • No vulnerable libraries
  • Nu HTML test
  • Optimal compression
  • Optimize images
  • Performance budget
  • Prefixed CSS first
  • scoped-svg-styles
  • Specify button type
  • SSL server test
  • TypeScript configuration hints set
  • Unneeded HTTP headers
  • Use `Strict-Transport-Security` header
  • Use `X-Content-Type-Options` header
  • Use Apple touch icon
  • Use charset `utf-8`
  • Use HTTPS
  • Use subresource integrity
  • Valid `Set-Cookie` header
  • Valid `theme-color`
  • Valid manifest
  • webpack configuration hints set

• Parsers

  • Babel config
  • CSS
  • HTML
  • JavaScript
  • JSX
  • LESS
  • Manifest
  • package.json config
  • SASS
  • TypeScript
  • TypeScript config
  • webpack config

• Server configurations

  • Examples of server configurations
  • Basic `web.config` for IIS
  • Basic server configuration for Apache

• Troubleshoot

  • Troubleshoot webhint installation and runtime issues