jQuery Chaining and $.each()

Method Chaining

jQuery methods return the jQuery object, so you can chain multiple calls.

$("p")
  .addClass("highlight")
  .css("color", "blue")
  .slideDown(300)
  .animate({opacity: 0.8}, 500);

$("#myDiv")
  .find("h3")
  .addClass("title")
  .end()          // back to #myDiv
  .find("p")
  .addClass("text");

$.each() — Iterate Elements

$("li").each(function(index, element) {
    console.log(index, $(element).text());
});

// Shorthand
$("li").each(function() {
    $(this).css("color", "red");
});

$.each() — Iterate Arrays/Objects

var fruits = ["apple", "banana", "cherry"];
$.each(fruits, function(i, val) {
    console.log(i + ": " + val);
});

$.each({name: "Alice", age: 30}, function(key, val) {
    console.log(key + " = " + val);
});