jQuery Overview

It is a Document Object Model (DOM) manipulation library. The DOM is a tree-structure representation of all the elements of a Web page. jQuery simplifies the syntax for finding, selecting, and manipulating these DOM elements. For example, jQuery can be used for finding an element in the document with a certain property (e.g. all elements with an h1 tag), changing one or more of its attributes (e.g. color, visibility), or making it respond to an event (e.g. a mouse click).

The purpose of jQuery is to make it much easier to use JavaScript on your website.There are a lots of other JavaScript frameworks out there, but jQuery seems to be the most popular, and also the most extendable.Many of the biggest companies on the Web use jQuery, like

  • Netflix
  • IBM
  • Google
  • Microsoft

Will jQuery work in all browsers?

The jQuery team knows all about cross browser issues, and they have written this knowledge into the jQuery library. jQuery will run exactly the same in all major browsers, including Internet Explorer 6!