# Examples in a Browser

There are a number of example files in the MathJax web demo repository (see the list of demos). These include documentation as well as live examples that you can run.

In addition, there are examples for:

- Configuring MathJax using an external script

- Configuring and loading MathJax using one local file

- Synchronizing with MathJax using promises

- Resetting TeX equation numbering

- Updating previously typeset content

- Looking up the math on the page

- Loading MathJax only on pages with math

- Automatic Section Numbering

- A replacement for the NativeMML output jax

- Backward Compatibility for TeX input

- Locating MathJax v2 math script tags