Yes, there is. At least for object properties, ES5 gave us the possiblity to alter the property descriptor flags by hand. So we can do that like
var data = { };
Object.defineProperty(data, 'secret', {
value: 42,
writable : false,
enumerable : true,
configurable : false
});
That way, we created a property secret with the value 42 within data, which cannot get modfied nor deleted.
The caveat here is, that the genius (like you called it) will also be able to spot this code and just modify that, to again be able to change the content if he wishes to. You just can't create a secured front-end javascript in that way. The code will always be available as plain-text for everybody.
To make this more complete, you can also create an object and freeze it at some point, using Object.freeze() and/or Object.seal() to shutdown the option for enumerating, deleting and modifying on properties of an object.
But again the word of caution: This is intended to affect your own code or foreign code, to prevent modifications by accident or on purpose at run time. There is no way to stop a developer since he can simply halt the execution of your script, before this even can take affect.
