I am following the logic outlined in this example.
The code works when I run this in regular JavaScript. However, when placed in React, it doesn't.
stonktank:function myRun(json){
     document.getElementById('sting').innerHTML = json.Symbol;    
     var stockscript = document.createElement('script');
     stockscript.src = 'http://dev.markitondemand.com/MODApis/Api/v2/Quote/jsonp?symbol=AAPL&callback=myRun';
     document.getElementsByTagName('head')[0].appendChild(stockscript);    
},  
The error I get is myRun is not defined. 
 
    