# withMathJax

`withMathJax(...)`

### Arguments

... | any HTML elements to apply MathJax to |
---|

### Description

This function adds MathJax to the page and typeset the math expressions (if
found) in the content `...`

. It only needs to be called once in an app
unless the content is rendered *after* the page is loaded, e.g. via
`renderUI`

, in which case we have to call it explicitly every
time we write math expressions to the output.

### Examples

```
<span class="help-block">Some math here $$\alpha+\beta$$</span>
<script>if (window.MathJax) MathJax.Hub.Queue(["Typeset", MathJax.Hub]);</script>
<div>more math here $$\sqrt{2}$$</div>
```