Topics

Commit to Your Library!

• The library is more powerful than plain JavaScript.
• The library is (probably) safer than plain JavaScript.
• The library (probably) "breaks" some JavaScript (e.g., for...in loop).

JavaScript Is Very Object-Oriented! (And Prototype Makes It More So)

• Numbers!!!! toggle
  • parseInt('42', 11).toString(9)
  • (2).sqrt.toFixed(4)
  • (-8).abs()
  • n.times(function)
• Strings toggle
  • str.strip()
  • str.stripScripts()
  • str.stripTags()
• Arrays toggle
  • array.clear()
  • array.join(connector)
  • array.flatten()
  • array.each(function)

Dollar-Sign Functions

• Searching for elements toggle
  • $('some_id') searches DOM for element with id="some_id"
  • $$('css selector') searches DOM for elements that match the CSS selector toggle
    • Supports almost the whole CSS 3 standard!
  • $F(field) returns the value of the specified field (actual element or id)