Executes a statement until a specified condition is false.
- 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.
- Optional. One or more statements to be executed if expression is true.
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.
var i = 0;
while (i < 100
if (i == breakpoint)
break Statement | continue Statement | do...while Statement | for Statement | for...in Statement