Pure JS Quiz Programme

Pure JS Quiz Programme

Ok So here's the quiz programme i created . it works all fine . check the fiddle below.

Jsfiddle   

basically the structure is 

1. An array declared with all the questions and answers. 

2. A function to ask all the questions and update the score. 

3. Loop to loop through the array . 


all very clean and simple to understand . 

now heres the problem , now i want ask the user what level of difficulty he wants the questions to be . so say for example i have two levels of difficulty easy and hard . 

so in the beginning now instead of one array there are 2 arrays : 

  1. var questionseasy = [['Whats is 2 + 2' , '4'] , ['What is 3 * 3' , '9'] , ['What is 5 * 5' , '25']];    

  2. var questionshard = [['Whats my name' , 'Ian'] , ['Where am i from' , 'India'] , ['My favorite Food' , 'Idly']];  
I wrote a few lines of JS code but was still not able to figure out . 

how to successfully select the arrays (either one) depending on what the user chooses his difficulty level to be . i did succeed in writing a function that checks whats the users difficulty level preference . 
so far my progress has been this  Js fiddle

Basically in my quest to build a simple JS quiz that has the ability to ask a user whats his preference of Questions (Easy , hard etc) is and  than display the questions based on what his preferences are has seen half success , can somebody come along and explain the simple logic or where i am going wrong ?

so far here is what i have done . will really appreciate any help .

Thank you .

Gautam .