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Operators are the symbols which are used to work with variables. You are already familiar with simple arithmetic operators, plus and minus.
Important: While the x++ and ++x operators both add one to x, they are not identical. x++ increments x after the assignment and ++x before. If x is 4, y = x++ results in y is 4 and x is 5. y = ++x sets y = 5 and x = 5. The x-- and --x operators work similar.
If you mix numeric and string values when adding to values together, the result is a string. “HTMLShop” + 69 results in “HTMLShop69”.
| Operators | |
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OPERATOR
x + y (numbers) x + y (string) x - y x * y x / y x % y x++, ++x x--, --x -x |
WHAT IT DOES
Adds x + y Adds x and y string Subtracts y from x Multiplies x and y Divides x by y Remainder of x / y Adds one to x Subtracts one from x Reverses the sign of x |
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