FLASH® LITE™ 2.x - Adobe Help and Support

var name:String = "Cola";
var instrument:String = "Drums";
trace(name + " plays " + instrument); // output: Cola plays Drums
Note: Flash Lite 1.x does not support the addition (+) operator for concatenating strings. For
Flash Lite 1.x, you must use the add operator to concatenate strings.
Usage 2: This statement adds the integers 2 and 3 and displays the resulting integer, 5, in the
Output panel:
trace(2 + 3); // output: 5
This statement adds the floating-point numbers 2.5 and 3.25 and displays the resulting
floating-point number, 5.75, in the Output panel
trace(2.5 + 3.25); // output: 5.75
Usage 3: Variables associated with dynamic and input text fields have the data type String. In
the following example, the variable deposit is an input text field on the Stage. After a user
enters a deposit amount, the script attempts to add deposit to oldBalance. However,
because deposit is a String data type, the script concatenates (combines to form one string)
the variable values rather than summing them.
var oldBalance:Number = 1345.23;
var currentBalance = deposit_txt.text + oldBalance;
trace(currentBalance);
For example, if a user enters 475 in the deposit text field, the trace() function sends the
value 4751345.23 to the Output panel. To correct this, use the Number() function to convert
the string to a number, as in the following:
var oldBalance:Number = 1345.23;
var currentBalance:Number = Number(deposit_txt.text) + oldBalance;
trace(currentBalance);
The following example shows how numeric sums to the right of a string expression are not
calculated:
var a:String = 3 + 10 + "asdf";
trace(a); // 13asdf
var b:String = "asdf" + 3 + 10;
trace(b); // asdf310
+= addition assignment operator
expression1 += expression2
Assigns expression1 the value of expression1+ expression2. For example, the following
two statements have the same result:
x += y;
x = x + y;
Operators 111