Javascript: return?

1

ok third thread today…not doin too good with javascript :-\

So i was just wondering…why do you need to do return true or return false??

And sometimes its just:

return true

and other times its:

return (true)

is there a difference? Not too sure what the return thing is used for :-\ Never used it anything similiar in flash either :-\ Any help would be great thanks!!

2

you return true or false in order to do something. When you are validating a form you want to return true so the form gets processed or false so that the form doesn’t go thru if there is a problem…

3

Ah ok…since you’re here i won’t bother making a new thread :stuck_out_tongue: Do you think you could explain this code from a email validation for me?


function isEmailAddr(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

I just don’t understand:

if (index > 0)
{
var pindex = theStr.indexOf(".",index);
if ((pindex > index+1) && (theStr.length > pindex+1))
result = true;
}

that part (which is basically nearly the whole code :P). It is confusin me:-\ thanks