Javascript

16 Write a function that will add all the integers from 1 to 10.

18 Write a function that will determine if a number entered by the user is even or odd. Use a loop to allow the user to enter as many numbers as desired and be sure to use an appropriate sentinel value for the user to end the program.

20 Write a function that uses the Math.round() method to round any number with a decimal part less than or equal to 0.6 down. For example, the result of using the program with the number 3.6 should be 3 but the result of 3.69 should be 4. Use a loop to allow the user to enter as many numbers as desired and be sure to use an appropriate sentinel value for the user to end the program.