My notes from Dipping into Child Themes presentation by Joseph Dickson at WordCamp LA 2018
Dipping into Child Themes – Joseph Dickson
Twitter: Joseph Dickson @joe4ska
Presentation abstract

Notes

• Child themes introduced in WordPress 2.7 in 2008
• why use child themes?
  • speed up development time
  • functionality goes into plugin
  • themes and appearance go into themes
• functions.php
  • Functions File Explained « WordPress Codex
  • Add plugin support to a theme
    • if you will be change theme use plugins
    • try to keep functions pretty simple.
  • Best used for theme specific functionality
  • Add menus, specific plugin support and adjustments to functionality
• Open graph support to display featured images
  • The Open Graph protocol
  • Open Graph | WordPress.org
• Replace google fonts with self hosted fonts
  • used enqueue for loading styles and js into sites. code sample in slides and sample child theme
  • wp_enqueue_script() | Function | WordPress Developer Resources
• Template hierarchy
  • Template Hierarchy | Theme Developer Handbook | WordPress Developer Resources
  • child theme’s template override the parent themes version
  • fantastic for introducing new templates
• Template tag
  • Template Tags « WordPress Codex
  • Examples
    • the_title()
    • get_the_title()
    • the_excerpt()
    • get_the_excerpt()
    • what is difference between get_the_title and the_title
• Conditional tags
  • Conditional Tags « WordPress Codex
  • Examples
    • is_home()
    • is_front_page()
    • has_tag()
    • is_front_page() and is_home()
    • is_admin()
    • in_category()
  • use case: add class names if condition are met.