# MathJax-node [](https://travis-ci.org/mathjax/MathJax-node)
This repository contains files that provide APIs to call MathJax from
node.js programs. There is an API for converting individual math
expressions (in any of MathJax's input formats) into SVG images or MathML
code, and there is an API for converting HTML snippets containing any of
MathJax input formats into HTML snippets containing SVG or MathML.
See the comments in the individual files for more details.
The `bin` directory contains a collection of command-line programs for
converting among MathJax's various formats. These can be used as examples
of calling the MathJax API.
Use
npm install MathJax-node
to install MathJax-node and its dependencies.
These API's can produce PNG images, but that requires the
[Batik](http://xmlgraphics.apache.org/batik/download.html) library. It
should be installed in the `batik` directory. See the README file in that
directory for more details.
# Getting started
MahJax-node provides two libraries, `lib/mj-single.js` and `lib/mj-page.js`. Below are two very minimal examples -- be sure to check out the examples in `./bin/` for more advanced configurations.
* `lib/mj-single.js` is optimized for processing single equations.
```javascript
// a simple TeX-input example
var mjAPI = require("./lib/mj-single.js");
mjAPI.config({
MathJax: {
// traditional MathJax configuration
}
});
mjAPI.start();
var yourMath = 'E = mc^2';
mjAPI.typeset({
math: yourMath,
format: "TeX", // "inline-TeX", "MathML"
mml:true, // svg:true,
}, function (data) {
if (!data.errors) {console.log(data.mml)}
});
```
* `lib/mj-page.js` is optimized for handling full HTML pages.
```javascript
var mjAPI = require("./lib/mj-page.js");
var jsdom = require("jsdom").jsdom;
var document = jsdom("TestLet's test mj-page
\\[f: X \\to Y\\], where \\( X = 2^{\mathbb{N}}\\)
");
mjAPI.start();
mjAPI.typeset({
html: document.body.innerHTML,
renderer: "NativeMML",
inputs: ["TeX"],
xmlns: "mml"
}, function(result) {
"use strict";
document.body.innerHTML = result.html;
var HTML = "\n" + document.documentElement.outerHTML.replace(/^(\n|\s)*/, "");
console.log(HTML);
});
```