Uncaught ReferenceError while loading asset file on android 4.4

http://stackoverflow.com/questions/20582282/uncaught-referenceerror-while-loading-asset-file-on-android-4-4

You have to replace all the lines loadUrl(...) with evaluateJavascript(...). But this is only for KitKat (API 19 or above), so you need to do an SDK version check first:

if (android.os.Build.VERSION.SDK_INT < 19) {
    mWebView.loadUrl("javascripｔ:MathJax.Hub.Queue(['Typeset',MathJax.Hub]);");
} else {
    mWebView.evaluateJavascript("javascripｔ:MathJax.Hub.Queue(['Typeset',MathJax.Hub]);",null);
}

When I updated a math tester code in long time, the MathJax didn't work. I spent about several hours on this issue. Finally, I found a helping page. Now it works fine.