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jQuery. callback problem

5+ Year Member

Msg#: 4261015 posted 6:50 am on Feb 1, 2011 (gmt 0)

I have a page where currently there's jQuery 'load' function followed by a regular js setTimeout('function()', delay): which works ok: they're called with "onload".

But it's a gamble on the time it takes to do the 'load', and there'll be a lot of other similar calls: it'd be better if it could be done as a callback, but I've not been able to get the syntax right, although it looks like it should be straightforward.

The test is here:
[www-personal.usyd.edu.au ]

wait six seconds, mouseover any of the six-line figures, you should get a number underneath; click, and you should get a color change, and scrollable text on the left.

The functions are in the js file,
[www-personal.usyd.edu.au ]at lines 43 and 58.

Can anyone help sort it out?



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Msg#: 4261015 posted 1:35 pm on Feb 1, 2011 (gmt 0)

Here's what you have now:

$('#allhex').load('loadem/'+ filename + '.htm');

To make the onD call happen as a callback of the load, you would change that to this:

$('#allhex').load('loadem/'+ filename + '.htm', function () {

Then to add the doWen call to the callback:

$('#allhex').load('loadem/'+ filename + '.htm', function () {


5+ Year Member

Msg#: 4261015 posted 9:43 pm on Feb 1, 2011 (gmt 0)

Thanks ! haven't tested yet, but I can see the logic now.


5+ Year Member

Msg#: 4261015 posted 1:11 am on Feb 3, 2011 (gmt 0)

Looking at the solution proposed, I eventually saw that I had too many functions going: went back to the jQuery site and followed instructions for a simple callback, without parameters:

function loadWen() {
$('#allhex').load('loadem/hexWen.htm', doWen);

which actually does the business. The pause between the onclick color-change and the appearance of the text is handled by a separate function: so there's no need to hide and then show the text div; and even less need to make that part of a callback.

I'll use different versions of this simple callback to load different sets on the right, linking to different text on the left.

Sometimes just setting the problem out helps. Thanks again.

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