Render Mathjax content in React Native Webview with auto height adjustment.
This project is based on react-native-autoheight-webview.
I am using my own fork of the module and added a DOM change detection feature as MathJax changes the DOM after page load, which makes height calculation in the original module inaccurate.
TODO
npm install react-native-mathjax --save- For Android,
react-native link
<MathJax
// HTML content with MathJax support
html={'$\sum_{i=0}^n i^2 = \frac{(n^2+n)(2n+1)}{6}$<br><p>This is an equation</p>'}
// MathJax config option
mathJaxOptions={{
messageStyle: 'none',
extensions: [ 'tex2jax.js' ],
jax: [ 'input/TeX', 'output/HTML-CSS' ],
tex2jax: {
inlineMath: [ ['$','$'], ['\\(','\\)'] ],
displayMath: [ ['$$','$$'], ['\\[','\\]'] ],
processEscapes: true,
},
TeX: {
extensions: ['AMSmath.js','AMSsymbols.js','noErrors.js','noUndefined.js']
}
}}
// All below props are react-native-autoheight-webview props
onHeightUpdated={height => console.log(height)},
// if page contains iframe on iOS, use a specific script for it
hasIframe={true}
/*
if set to false may cause some layout issues (width of container not fit for screen) on android
if set to true may cause some layout issues (smaller font size) on iOS
*/
scalesPageToFit={Platform.OS === 'android' ? true : false}
// baseUrl not work in android 4.3 or below version
enableBaseUrl={true}
// offset of rn webview margin
heightOffset={5}
// default width is the width of screen
// if there are some text selection issues on iOS, the width should be reduced more than 15 and the marginTop should be added more than 35
style={{ width: Dimensions.get('window').width - 15, marginTop: 35 }}
// enable animation by default
enableAnimation={true},
// only works on enable animation
animationDuration={255},
// use local or remote files
files={[{
href: 'cssfileaddress',
type: 'text/css',
rel: 'stylesheet'
}]}
// change script (have to change source to reload on android)
customScript={`document.body.style.background = 'lightyellow';`}
// rn WebView callbacks
onError={() => console.log('on error')}
onLoad={() => console.log('on load')}
onLoadStart={() => console.log('on load start')}
onLoadEnd={() => console.log('on load end')}
// only on iOS
onShouldStartLoadWithRequest={result => {
console.log(result)
return true;
}}
// add custom CSS to the page's <head>
customStyle={`
* {
font-family: 'Times New Roman';
}
p {
font-size: 16px;
}
`}
/>