// selectors

$(document).ready(function() {
  // do something
  alert('document ready');
});

$(window).on('load', function() {
  // do something
  alert('window loaded');
});

$(window).on('scroll', function() {
  // do something
  alert('window scrolled');
});

$(document).on('event event2 event3', '.class .class2 #id #id2', function(e) {
  // do something
});

$(document).on({
  mouseenter: function(e) {
    // do something
  },
  mouseleave: function(e) {
    // do something
  },
  mousemove: function(e) {
    // do something
    alert('mouse moved');
  }
}, '.class .class2 #id #id2');

$('element #id .class')
$('element>#id>.class')


// traversing dom

  .parent()
  .parents()
  .parentsUntil()
  .children()
  .find()
  .siblings()
  .first()
  .last()
  .next()
  .nextAll()
  .nextUntil()
  .prev()
  .prevAll()
  .prevUntil()
  .filter()
  .not()


// events

  .trigger('event')

form:     blur change focus focusin select submit
keyboard: keydown keypress keyup
mouse:    click dblclick focusout hover mousedown mouseenter mouseleave mousemove mouseout mouseover mouseup toggle
browser:  error resize scroll
document: load ready unload


// effects

  .hide()
  .show()
  .fadeIn()
  .fadeOut()
  .fadeToggle()
  .fadeTo()
  .slideDown()
  .slideUp()
  .slideToggle()
  .animate({css...}, speed, callback_function_after_completion)
  .stop() // stop animation

// html
  .text()
  .html()
  .val()
  .attr() // static
  .prop() // dynamic
  .append()
  .prepend()
  .after()
  .before()
  .remove()
  .empty()
  .addClass()
  .removeClass()
  .toggleClass()
  .css()
  .width()
  .height()
  .innerWidth()
  .innerHeight()
  .outerWidth()
  .outerHeight()

// ajax
  .load(url)
  $.get(url, callback)
  $.post(url, callback)
  $.ajax(settings)