Javascript_Calculator This is the simple calculator which perform the addition,substraction,multiplication and the division operation on the given two numbers. How to use this calculator--- First you have to enter the first value in the first input box . Second you have to enter the second value in the second input box . After that you have to choose one operator it may be + ,-,/, or *. and than in the result box you can see the answer of the given operations perform. Exception CURRENTLY NUMBERS BUTTONS ARE NOT ACTIVE ONLY OPERATORS ARE ACTIVE TO USE.