Selecting DOM elements
Functions for accessing elements by class, id and other selectors.
Select DOM elements by CSS selector
querySelectorAll - a CSS selector method like the one provided by jQuery.
jQuery: $(selector), $(selector, context)
Select elements by class name
getElementsByClassName - a fast way of selecting DOM elements by class name in modern browsers. Does not work in IE 8 and below.
Select elements by tag name
getElementsByTagName - a fast and cross browser safe way for selecting DOM elements by tag name, e.g. "div", "a", "span", etc.
Select an element by ID
getElementById - a fast and cross browser safe way for selecting DOM elements.