1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/**
* A plugin which enables rendering of math equations inside
* of reveal.js slides. Essentially a thin wrapper for MathJax 3
*
* @author Hakim El Hattab
* @author Gerhard Burger
*/
export const MathJax3 = () => {
// The reveal.js instance this plugin is attached to
let deck;
let defaultOptions = {
tex: {
inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ] ]
},
options: {
skipHtmlTags: [ 'script', 'noscript', 'style', 'textarea', 'pre' ]
},
startup: {
ready: () => {
MathJax.startup.defaultReady();
MathJax.startup.promise.then(() => {
deck.layout();
});
}
}
};
function loadScript( url, callback ) {
let script = document.createElement( 'script' );
script.type = "text/javascript"
script.id = "MathJax-script"
script.src = url;
script.async = true
// Wrapper for callback to make sure it only fires once
script.onload = () => {
if (typeof callback === 'function') {
callback.call();
callback = null;
}
};
document.head.appendChild( script );
}
return {
id: 'mathjax3',
init: function(reveal) {
deck = reveal;
let revealOptions = deck.getConfig().mathjax3 || {};
let options = {...defaultOptions, ...revealOptions};
options.tex = {...defaultOptions.tex, ...revealOptions.tex}
options.options = {...defaultOptions.options, ...revealOptions.options}
options.startup = {...defaultOptions.startup, ...revealOptions.startup}
let url = options.mathjax || 'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js';
options.mathjax = null;
window.MathJax = options;
loadScript( url, function() {
// Reprocess equations in slides when they turn visible
deck.addEventListener( 'slidechanged', function( event ) {
MathJax.typeset();
} );
} );
}
}
};
|
