11.2. WMLScript Assignment Operators - Assigning Values to Variables

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Assignment operators are used to assign a value to a variable. One of the assignment operators, =, has been used many times earlier in this WMLScript tutorial. Its usage is very straightforward and there is nothing to explain further. Here is an example:

z = 18;

The z variable contains the value 18 after execution.

WMLScript supports a number of shortcut operators that combine arithmetic operations with value assignment operations. Below is an example of the += operator:

var z = 1;
z += 2;

After executing the above script, z contains the value 3. "z += 2;" is equivalent to "z = z + 2;".

Below is an example of the -= operator:

var z = 5;
z -= 3;

After execution, z contains the value 2. The line "z -= 3;" is equivalent to "z = z – 3;".

The following table summarizes the shortcut assignment operators available in WMLScript:

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