Question

I am setting up a quiz that uses boolean variables for correct/incorrect and then passes those variable values to a PHP script via Ajax for processing and storing in a database.

How easily could someone override the values set by my code with after finding the var names with “view source”?

Answer 1

They can do it easily using Chrome/Firebug Console by issuing a Javascript command over there like

var your_var_name = 60;

You must have backend synchronization also to prevent this.