do...while Statement (Windows Scripting - JScript)

Article
07/17/2015

Executes a statement block once, and then repeats execution of the loop until a condition expression evaluates to false.

Syntax

do
   statement
while (expression) ;

Arguments

statement
Required. The statement to be executed if expression is true. Can be a compound statement.
expression
Required. An expression that can be coerced to Boolean true or false. If expression is true, the loop is executed again. If expression is false, the loop is terminated.

Remarks

Unlike the while statement, a do...while loop is executed one time before the conditional expression is evaluated.

On any line in a do…while block, you can use the break statement to cause the program flow to exit the loop, or you can use the continue statement to go directly to the while expression.

In the following example, the statements in the do...while loop continue to execute as long as the variable i is less than 10.

var i = 0;
do
{
   document.write(i + " ");
   i++;
} while (i < 10);

// Output: 0 1 2 3 4 5 6 7 8 9

Requirements

Version 3

Change History

Date	History	Reason
March 2009	Modified Arguments section, Remarks section, and example.	Information enhancement.

March 2009

Modified Arguments section, Remarks section, and example.

Information enhancement.