a simple onloading prob.

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a simple onloading prob. -- WangE --

I just don't quite understand the following javascript codes:
MyAjax.dataset.onLoading=function(b) {
var e=document.getElementById("loadingInfo");
e.style.visibility=b?"visible":"hidden";
}

Well,what does the parameter "b" mean?where does it come from,and stands for what?
It seems this simple sentence works quite good,how does it work?does it check the status (of "b") at intervals?
Thanks for help!

--
-------Wang E--------
(Well,gmail doesn't support html style signature,that's disappointing.)

-- AlbertWeinert --

WangE schrieb:

I just don't quite understand the following javascript codes:
MyAjax.dataset.onLoading=function(b) {
var e=document.getElementById("loadingInfo");
e.style.visibility=b?"visible":"hidden";
}

Well,what does the parameter "b" mean?where does it come from,and stands
for what?

The "b" stand for showing, it's a boolean with true or false. You can

also give them a better name. If you get a true you should show your
loading info and with false you should hide it.

MyAjax.dataset.onLoading=function(show) {
var e=document.getElementById("loadingInfo");
e.style.visibility=show?"visible":"hidden";
}

It seems this simple sentence works quite good,how does it work?does it
check the status (of "b") at intervals?

It would be called by the Ajax.NET Pro at the beginning of an

async-request and at the end of that request. Mostly the element is
hiding after your callback-faunction. It would not be called by
sync-request, better it makes even no sense, because the browser would
not update the page.

--
Freundliche Grüße

Albert Weinert

http://der-albert.com

-- Zihotki --

b?"visible":"hidden" - this is a sample of trinar operator. It's equal with this:
if (b)
{
e.style.visibility="visible";
}
else
{
e.style.visibility="hidden";
}

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