# Difference between revisions of "Using MathJax"

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''[http://mathjax.org MathJax] is an open-source JavaScript display engine for LaTeX and MathML that works in all modern browsers. It was designed with the goal of consolidating the recent advances in web technologies into a single, definitive, math-on-the-web platform supporting the major browsers and operating systems.'' | ''[http://mathjax.org MathJax] is an open-source JavaScript display engine for LaTeX and MathML that works in all modern browsers. It was designed with the goal of consolidating the recent advances in web technologies into a single, definitive, math-on-the-web platform supporting the major browsers and operating systems.'' | ||

− | The first solutions how to use MathJax in texts inside of a JSXGraph construction have been worked out by [http://www.onemathematicalcat.org/ Carol Fisher] and [http://wiki.paranormalcop. | + | The first solutions how to use MathJax in texts inside of a JSXGraph construction have been worked out by [http://www.onemathematicalcat.org/ Carol Fisher] and [http://wiki.paranormalcop.org/ Agentyikes]. Thank you very much for doing this great work. |

− | Meanwhile, | + | Meanwhile, JSXGraph contains full support of MathJax. Here is an example how to enable '''dynamic''' MathJax syntax inside of JSXGraph. |

<jsxgraph> | <jsxgraph> | ||

var brd, k; | var brd, k; | ||

Line 14: | Line 14: | ||

brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,20,5,-5], axis:true, showNavigation:true, showCopyright:true}); | brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,20,5,-5], axis:true, showNavigation:true, showCopyright:true}); | ||

k = brd.create('slider',[[-4,-2],[3,-2],[-5,1,5]],{name:'n', snapWidth:1}); | k = brd.create('slider',[[-4,-2],[3,-2],[-5,1,5]],{name:'n', snapWidth:1}); | ||

− | brd.create('functiongraph', [function(t) {return | + | brd.create('functiongraph', [function(t) {return JXG.Math.pow(Math.E,t*k.Value());}],{strokeColor:'#ff0000'}); |

− | brd.create('text',[-4, | + | brd.create('text',[-4,7, |

function() { | function() { | ||

return '\\[f(x) = e^{' + k.Value() + 'x}\\]'; | return '\\[f(x) = e^{' + k.Value() + 'x}\\]'; | ||

− | }]); | + | }], {fontSize:24}); |

</jsxgraph> | </jsxgraph> | ||

Line 32: | Line 32: | ||

</source> | </source> | ||

− | |||

− | |||

To display MathJax inside of JSXGraph, the function that is linked to (dynamic) text has to return valid MathJax syntax. | To display MathJax inside of JSXGraph, the function that is linked to (dynamic) text has to return valid MathJax syntax. | ||

<source lang="javascript"> | <source lang="javascript"> | ||

Line 39: | Line 37: | ||

function() { | function() { | ||

return '\\[f(x) = e^{' + k.Value() + 'x}\\]'; | return '\\[f(x) = e^{' + k.Value() + 'x}\\]'; | ||

− | }]); | + | }], {fontSize:24}); |

</source> | </source> | ||

Line 48: | Line 46: | ||

brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,20,5,-5], axis:true, showNavigation:true, showCopyright:true}); | |||

k = brd.create('slider',[[-4,-2],[3,-2],[-5,1,5]],{name:'n', snapWidth:1}); | k = brd.create('slider',[[-4,-2],[3,-2],[-5,1,5]],{name:'n', snapWidth:1}); | ||

− | brd.create('functiongraph', [function(t) {return | + | brd.create('functiongraph', [function(t) {return JXG.Math.pow(Math.E,t*k.Value());}],{strokeColor:'#ff0000'}); |

brd.create('text',[-4,15, | brd.create('text',[-4,15, | ||

function() { | function() { | ||

Line 56: | Line 54: | ||

[[Category:Examples]] | [[Category:Examples]] | ||

+ | [[Category:Text]] |

## Latest revision as of 17:16, 20 February 2013

This example uses MathJax to render mathematical text.

*MathJax is an open-source JavaScript display engine for LaTeX and MathML that works in all modern browsers. It was designed with the goal of consolidating the recent advances in web technologies into a single, definitive, math-on-the-web platform supporting the major browsers and operating systems.*

The first solutions how to use MathJax in texts inside of a JSXGraph construction have been worked out by Carol Fisher and Agentyikes. Thank you very much for doing this great work.

Meanwhile, JSXGraph contains full support of MathJax. Here is an example how to enable **dynamic** MathJax syntax inside of JSXGraph.

### The underlying JavaScript code

The first step is to include the freely available MathJax JavaScript library (additionally to the JSXGraph library):

```
<script type="text/javascript" src="/distrib/MathJax/MathJax.js"></script>
```

The second step is to enable MathJax rendering in the JSXGraph options:

```
JXG.Options.text.useMathJax = true;
```

To display MathJax inside of JSXGraph, the function that is linked to (dynamic) text has to return valid MathJax syntax.

```
brd.create('text',[-4,15,
function() {
return '\\[f(x) = e^{' + k.Value() + 'x}\\]';
}], {fontSize:24});
```

The complete program code looks like this:

```
var brd, k;
JXG.Options.text.useMathJax = true;
brd = JXG.JSXGraph.initBoard('jxgbox', {boundingbox:[-5,20,5,-5], axis:true, showNavigation:true, showCopyright:true});
k = brd.create('slider',[[-4,-2],[3,-2],[-5,1,5]],{name:'n', snapWidth:1});
brd.create('functiongraph', [function(t) {return JXG.Math.pow(Math.E,t*k.Value());}],{strokeColor:'#ff0000'});
brd.create('text',[-4,15,
function() {
return '\\[f(x) = e^{' + k.Value() + 'x}\\]';
}]);
```