do-while
do-while
is also a loop construct like while, but evaluates its expression at the bottom
of the loop instead of the top.
Syntax
do {
//statement(s)
} while
(expression);
Above
statement executes block of statement until the condition is true.
doWhile.html
<!DOCTYPE html> <html> <head> <title>do-while loop</title> </head> <body> <script type="text/javascript"> var number = parseInt(prompt("Enter a number", "10")); document.write("<h2>Even numbers from 0 to " + number + " are </h2>"); var i = 0; do { document.write(i + "<br />"); i += 2; } while (i <= number); </script> </body> </html>
Load above
page in browser, it prompts for a number, and print all the even numbers from 0
to the number given by user.
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