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Microsoft® JScript®
while Statement
 Language Reference 
Version 1 

See Also


Description
Executes a statement until a specified condition is false.
Syntax
while (expression)
   statement

The while statement syntax has these parts:

Part Description
expression A Boolean expression checked before each iteration of the loop. If expression is true, the loop is executed. If expression is false, the loop is terminated.

statement The statement to be executed if expression is true. Can be a compound statement.

Remarks
The while statement checks expression before a loop is first executed. If expression is false at this time, the loop is never executed.

The following example illustrates the use of the while statement:

function BreakTest(breakpoint)
{
   var i = 0;
   while (i < 100)
   {
   if (i == breakpoint)
     break;
     i++;
   }
   return(i);
}

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