JavaScript function queue « Life is grand

JavaScript function queue

Anybody know of a JavaScript function queue? The more I get into developing Ajax apps the more I need to reliably queue function calls. e.g. script.aculo.us needs to highlight an element then do a DropOut on it and then I want some JavaScript to remove the element from the DOM. You can’t do the remove before the highlight or there will be nothing to highlight. A queue would be ideal.

This entry was posted on Friday, May 19th, 2006 at 4:18 pm and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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Derek Lakin 2 years ago 1 point
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Take a look at the event system in dojo. That may be able to do what you want.

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http://blog.polyceta.com

Paul Watson 2 years ago 1 point
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Thanks Derek. It could be part of the solution I think.

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http://www.paulmwatson.com/

Shog9 2 years ago 1 point
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Eh, why not...

function fQueue()
{
var pos = 0;
var queue = arguments;
return function()
{
if ( pos < queue.length )
queue[pos++]();
}
}

function DoThingOne(whenDone)
{
document.getElementById("Output").innerHTML += "Thing One!<br>";
whenDone();
}

function DoThingTwo(whenDone)
{
document.getElementById("Output").innerHTML += "Thing Two!<br>";
whenDone();
}

function DoThingThree(whenDone)
{
document.getElementById("Output").innerHTML += "Thing Three!<br>";
whenDone();
}

function DoThings()
{
var q = fQueue(
function(){DoThingOne(q);},
function(){DoThingTwo(q);},
function(){DoThingThree(q);});
q();
}

...no idea if that's close to what you're looking for, but if it is and you get rich, send me a pizza.
A *solid gold* pizza.
With pepperoni and mushrooms.
*Morel* mushrooms.

-josh

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Rowan Nairn 2 years ago 1 point
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There are queues in the new version of script.aculo.us

see: http://www.railsdevelopment.com/2006/01/15/effe...

Then use the afterFinish option for executing arbitrary code when the effect is done.

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http://eurekaman.com

Paul Watson 2 years ago 1 point
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Thanks for the code Shog and that is excellent news about scriptaculous, thanks Rowan.

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http://www.paulmwatson.com/

ZeBadger 2 years ago 1 point
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This queue is fantastic elegant code and really easy to use....

http://www.safalra.com/programming/javascript/q...

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Ady 1 year ago 1 point
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why not use an array.

var queue = new Array()

//Enqueue
queue.push(obj);

//Dequeue
obj = queue.shift()

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http://www.paperheads.co.uk

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