Chapter 11. Operators in WMLScript
Chapter 10, “Variables and Functions,” covered using variables and functions to create expressions. These expressions then allowed you to compare and manipulate data. Using expressions, you created the functionality to check the user’s input to see whether it was in a correct format.
As you’ll learn in this chapter, for expressions to work correctly, they must use something known as an operator. An operator performs some type of manipulative action on a value (such as addition, multiplication, comparisons, and so on). In essence, operators are the glue that holds an expression together. In this chapter, you’ll learn about some of the most widely used operators available in WMLScript.
The following is a summary ...
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