Cannot Read Property 'innerhtml' Of Undefined

I'm trying to test an app in salesforce lightning component, but when I load the app (I try this app) I got the error Cannot read property 'innerHTML' of undefined The associate

Solution 1:

That just means that the element that you are looking for does not exist:

var elementNotFound = document.getElementById("noSuchId"); // Does not existconsole.log("The element:", elementNotFound);
console.log(elementNotFound.innerHTML);

As you have posted the mimified JavaScript and no HTML, I don't know how to help further then saying: Make use the ID you are using to find the element is correct and has no spelling mistakes, and that the element is actually in the HTML.

Hope this helps.