# html¶

The html extension gives you access to some HTML features like styles, classes, element ID’s, and clickable links. It defines the following non-standard macros:

\href{url}{math}

Makes math be a link to the page given by url.

\class{name}{math}

Attaches the CSS class name to the output associated with math when it is included in the HTML page. This allows your CSS to style the element.

\cssId{id}{math}

Attaches an id attribute with value id to the output associated with math when it is included in the HTML page. This allows your CSS to style the element, or your javascript to locate it on the page.

\style{css}{math}

Adds the give css declarations to the element associated with math.

For example:

x \href{why-equal.html}{=} y^2 + 1

(x+1)^2 = \class{hidden}{(x+1)(x+1)}

(x+1)^2 = \cssId{step1}{\style{visibility:hidden}{(x+1)(x+1)}}


This extension is loaded automatically when the autoload extension is used. To load the html extension explicitly, add '[tex]/html' to the load array of the loader block of your MathJax configuration, and add 'html' to the packages array of the tex block.

window.MathJax = {

Alternatively, use \require{html} in a TeX expression to load it dynamically from within the math on the page, if the require extension is loaded.