javascript using variable in function (4)

been trying to get this to work for hours but still no go

so.. quick question for some coding experts

for this code, if i have the full url hardcoded, it works...

<script type="text/javascript">

$(function(){

$go({

"rightHtml": "<iframe src='http://fullurl.com/hardcoded-here-works' frameBorder=0 height=100% width=100% seamless=seamless></iframe>",


});
});

</script>

<script type="text/javascript">

$(function(){

$go({

"rightHtml": "<iframe src='newurl' frameBorder=0 height=100% width=100% seamless=seamless></iframe>",


});
});

</script>

<script type="text/javascript">

$(function(){

$go({

"rightHtml": "<iframe src='" + newurl + "' frameBorder=0 height=100% width=100% seamless=seamless></iframe>",


});
});

</script>

you rock man!

i tried so many combinations to hack it out, but never tried that

i never understood the single quotes and double quotes...

can you explain what you did there?

why are there '+' on both sides again?

i have just been using a collected to swiped codes and never really understood it

Assuming it worked, haha. Well, single quotes inside double quotes just go as characters inside a string, if that make sense.
Double quotes on the other hand are "stronger" or whatever you'd like to imagine it being. Like if you want to write say, inline js, like for example
onclick="function1('hi'); function2('hello');", and the functions take in strings you use single quotes for that cause a double quote would "break up" the string. + is just for concatenating strings. So looking at this:

"<iframe src='" + newurl + "' frameBorder=0 height=100% width=100% seamless=seamless></iframe>",
^String1 + string2+ String3
That is actually 3 strings. So you break it up where you need to insert your "newurl" variable, and concatenate them together.

Hope it made sense