MACROMEDIA FLASH 8-FLASH, Reference

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while 75
Parameters
condition
The expression that is evaluated each time the
while
statement executes.
statement(s)
The instructions to execute when the condition evaluates to
true
.
Description
Statement; tests an expression and runs a statement or series of statements repeatedly in a loop
as long as the expression is
true
.
Before the statement block is run, the condition is tested; if the test returns
true
, the
statement block is run. If the condition is
false
, the statement block is skipped and the first
statement after the
while
statement’s statement block is executed.
Looping is commonly used to perform an action when a counter variable is less than a
specified value. At the end of each loop, the counter is incremented until the specified value is
reached. At that point, the condition is no longer
true
, and the loop ends.
The
while
statement performs the following series of steps. Each repetition of steps 1 through
4 is called an iteration of the loop. The condition is tested at the beginning of each iteration:
1.
The expression
condition
is evaluated.
2.
If
condition
evaluates to
true
or a value that converts to the Boolean value
true
, such as
a nonzero number, go to step 3.
Otherwise, the
while
statement completes and execution resumes at the next statement
after the
while
loop.
3. Run the statement block
statement(s)
.
4. Go to step 1.
Example
The following example executes a loop as long as the value of the index variable
i
is less
than 10:
i = 0;
while(i < 10) {
trace ("i = " add ++i);// Output: 1,2,3,4,5,6,7,8,9
}
See also
continue
,
do..while
,
for