Do...While Loop

The do...while statement creates a loop that executes a specified statement until the test condition evaluates to be false. The condition is evaluated after executing the statement. Syntax for do... while is

do{
    // statement
}
while(expression) ;

Lets for example see how to print numbers less than 10 using do...while loop:

var i = 0;
do {
    document.write(i + " ");
    i++; // incrementing i by 1  
} while (i < 10);

: i = i + 1 can be written i++.

var i = 0;
do {
    i++; // incrementing i by 1 
} while (i < 5);