do...while

Summary

Creates a loop that executes a specified statement until the test condition evaluates to false. The condition is evaluated after executing the statement, resulting in the specified statement executing at least once.

Version Information

Syntax

do
   statement
while (condition);

Parameters

statement

A statement that is executed at least once and is re-executed each time the condition evaluates to true. To execute multiple statements within the loop, use a block statement ({ ... }) to group those statements.

condition

An expression evaluated after each pass through the loop. If condition evaluates to true, the statement is re-executed. When condition evaluates to false, control passes to the statement following the do...while.

Examples

Example: Using do...while

In the following example, the do...while loop iterates at least once and reiterates until i is no longer less than 5.

do {
   i += 1;
   document.write(i);
} while (i < 5);

See also

while, for