␡
- Mathematical Operators
- Variables and Combined Assignment Operators
- Increment and Decrement Operators
- Order of Operations
- Using Parentheses to Force Order
- Summing up Math Operations
- Wrapping Up
This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
Increment and Decrement Operators
When you work with ActionScript a lot, you'll commonly be adding or removing 1 from variables and properties.
To make this process easier, there is a shortcut called the increment and decrement operators. Take a look at the following code.
- Create a new ActionScript 3.0 project and enter in the following code for the project:
// Increment and Decrement var myValue:Number = 5; trace(myValue); myValue++; trace(myValue); myValue--; trace(myValue);
- Run this project. You'll see the following in the Output panel:
5 6 5
In the increment and decrement example, the value of myValue is initially set at 5 and is sent to the Output panel. The number is then increased by 1 and sent again, resulting in 6.
When you add a double minus, --, to the end, it decrements the value by 1. The value of myValue is already 6 based on the previous function, and is then decremented to be 5 again.