jQuery

• selectors
• actions
• AJAX

jQuery selector

• use $() or jQuery()
• like document.getElementById(), but uses CSS XPath
• can return a list
• return is jQuery object
• can also apply to a DOM object
• can also search an XML object

jQuery actions

• event handlers
  • .click()
  • .mouseover()
  • .ready()
  • etc
• .css()
• .html()
• .append()
• .val()
• effects:
  • slideDown / slideUp / slideToggle
  • show / hide / toggle
  • etc
  • can be animated with different speeds
• .each()

jQuery AJAX

• use $.post()
• runs callback function when data is returned

This document is by Dave Pape, and is released under a Creative Commons License.