jQuery Forum

There are no plugins like that because you can't do that in JavaScript. You
can't block execution of JavaScript code until some event (such as closing
your lightbox-style confirmation) occurs.
The best you can do is to call another function when the event happens. This
is why every asynchronous JavaScript API uses callback functions.
I haven't looked at any of the plugins you're talking about, but I'm sure
they all work that way. (Or perhaps they fire a custom event, but that's
really the same thing as calling a callback function.)
So instead of code like your example:
var value = prompt( 'enter value' );
alert( value );
You'd expect to use a pattern like this:
prompt( 'enter value', function( value ) {
alert( value );
});
-Mike