Math operations on numbers in JavaScript
Addition:
javascriptlet a = 1 + 2;
alert(a); // shows 3
Subtraction:
javascriptlet b = 3 - 2;
alert(b); // shows 1
Multiplication:
javascriptlet c = 3 * 2;
alert(c); // shows 6
Division:
javascriptlet d = 4 / 2;
alert(d); // shows 2
Задание 1
Create the variable a. Write to
it the sum of the numbers 1, 2 and 3.
Display the contents of the variable a,
using the function alert.