while Statement


while (expression) statement

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.

statement: Required. Statement to be executed if expression is true. Can be a compound statement.

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.

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

Arguments