This PR is the solution for 'js basics' #1

[AnandajithS]

• I learnt about the basics of JavaScript such as declaration of variables, the different datatypes, operators, defining and calling functions, control statements, arrays and how to use loops to access an element inside it.
• I did not face much difficulty while completing this sub-task
• No, I was able to complete the assignments through the resources which were provided to us
• I feel that this sub-task is perfect for a beginner who is getting into JavaScript, as this was not too difficult.