A “node”, in this context, is simply an HTML element. The “DOM” is a tree structure that represents the HTML of the website, and every HTML element is a “node”. See Document Object Model (DOM). More specifically, “Node” is an interface that is implemented by multiple other objects, including “document” and “element”. All objects implementing the “Node” interface … Read more
You can check whether element.className matches /\bthatClass\b/.\b matches a word break. Or, you can use jQuery’s own implementation: To answer your more general question, you can look at jQuery’s source code on github or at the source for hasClass specifically in this source viewer.
Document object model.The DOM is the way Javascript sees its containing pages’ data. It is an object that includes how the HTML/XHTML/XML is formatted, as well as the browser state. A DOM element is something like a DIV, HTML, BODY element on a page. You can add classes to all of these using CSS, or interact … Read more