2009-02-20T07:13:00.001-08:00

How to Use the Javascript Confirm Function

from wikiHow - The How to Manual That You Can Edit

Have you ever needed to make the user confirm something? Ever wanted the user to click OK and be redirected to a site and click Cancel to stay on the current page? Read on and find out a very simple way to do so with the JavaScript confirm(); function.

Steps

Create a variable and initialize its value to the return value of the confirm() function.
var userChoice = confirm("Do you want to leave WikiHow?");
Use a set of if statements or conditional operators to determine the effect of clicking OK or Cancel. When the user clicks OK, confirm() returns the value true. If
userChoice ? (alert("Aw, bye!");window.location="http://www.google.com/") :
alert("Alright! Thanks for sticking around.");

Tips

The confirm() function can be used directly within HTML as an event. For example:
or If the user clicks Ok, the event will go forward, if not, it won't. It's that simple.
Using conditional operators is faster than using if statements, but it may look confusing.
You can use the confirm() function for anything including preventing underage users from entering your site.