If you right click on the site again and click “View Page Source”, you will see the raw HTML output of the website. JavaScript can add, remove, and change any of these elements. These objects are arranged in a tree structure, with being closer to the root, and each nested element being a branch further along the tree. The HTML code you see here is the DOM.Įach HTML element is considered a node in the DOM - an object that JavaScript can touch. To view exactly what the DOM is, in your web browser, right click on the current web page select “Inspect”. The Document Object Model (DOM) is the method by which JavaScript (and jQuery) interact with the HTML in a browser. At its core, jQuery is used to connect with HTML elements in the browser via the DOM. This short example demonstrates how jQuery can achieve the same end result as plain JavaScript in a succinct manner. There are two ways to include jQuery in a project, which is to download a local copy or link to a file via Content Delivery Network (CDN). JQuery is a JavaScript file that you will link to in your HTML. While it is possible to begin writing jQuery without an advanced knowledge of JavaScript, familiarity with the concepts of variables and data types will help significantly.

An understanding of the fundamentals of programming.

Prerequisitesīefore you begin this guide you’ll need the following:

Once you have this base of knowledge and jQuery installed, you will learn to use common selectors, events, and effects. Important web development concepts such as API, DOM, and CDN will be defined in relation to jQuery. You will go through installation of jQuery in a web project.

This guide assumes no prior knowledge of jQuery. jQuery has the added benefit of being cross-browser compatible, meaning you can be certain the output of your code will render as intended in any modern browser. It is not a programming language, but rather a tool used to make writing common JavaScript tasks more concise. JQuery is the “Write Less, Do More” JavaScript library. Most animations or actions that happen as a result of a user clicking, hovering, or scrolling are constructed with JavaScript. Websites are structured with HTML, styled with CSS, and interactive functionality is added with JavaScript. HTML, CSS, and JavaScript are three fundamental languages of the internet.

Jquery