Executes a statement until a specified condition is false.

while (expression)
   statements 

Arguments

expression

Required. 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.

statements

Optional. One or more statements to be executed if expression is true.

Remarks

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

Example

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);
}

Requirements

Version 1

See Also

break Statement | continue Statement | do...while Statement | for Statement | for...in Statement