11–20 of 31 posts
globalStore? Ewwwww. As the jQuery documentation states on $.when [1], the .then() callback function will be called with a number of arguments equal to those passed to $.when(), ergo in this example: .then(function(html, css, feature) {}); Which avoids the need for a global / shared object. If you need access to these resources outside of this one callback, prefer to pass the promise object itself around; promises al…
Promises are the way you should be doing AJAX, really.
Or you can make a count-down latch of some kind: var num_results = 3; var results = [] var makeCallback = function(index) { return function(response) { num_results -= 1; results[index] = response; if (num_results > 0) { return; } // actually do stuff here, all results are loaded. }; }; $.get("/a", makeCallback(0)); $.get("/b", makeCallback(1)); $.get("/c", makeCallback(2)); // etc It's also not hard to make a generic…
Or you can make a count-down latch of some kind: var num_results = 3; var results = [] var makeCallback = function(index) { return function(response) { num_results -= 1; results[index] = response; if (num_results > 0) { return; } // actually do stuff here, all results are loaded. }; }; $.get("/a", makeCallback(0)); $.get("/b", makeCallback(1)); $.get("/c", makeCallback(2)); // etc It's also not hard to make a generic…
In your case case, your mutex would be the num_results variable and the conditional is that it is greater than 0.
http://shop.oreilly.com/product/0636920030508.do
...has just been published.
(N.B. I'm one of the authors - all feedback would be most welcome and apologies for the shameless plug).
Or you can make a count-down latch of some kind: var num_results = 3; var results = [] var makeCallback = function(index) { return function(response) { num_results -= 1; results[index] = response; if (num_results > 0) { return; } // actually do stuff here, all results are loaded. }; }; $.get("/a", makeCallback(0)); $.get("/b", makeCallback(1)); $.get("/c", makeCallback(2)); // etc It's also not hard to make a generic…
Can't get enough of deferreds and promises? Want lots more examples of interesting, cunning and mind bending ways to use promises and deferreds? As luck would have it, this: http://shop.oreilly.com/product/0636920030508.do ...has just been published. (N.B. I'm one of the authors - all feedback would be most welcome and apologies for the shameless plug).
Can't get enough of deferreds and promises? Want lots more examples of interesting, cunning and mind bending ways to use promises and deferreds? As luck would have it, this: http://shop.oreilly.com/product/0636920030508.do ...has just been published. (N.B. I'm one of the authors - all feedback would be most welcome and apologies for the shameless plug).
I don't mean to shit on your book, but an entire book dedicated to jQuery deferreds? There is that much to say about them?
I wrote this high-level piece of fluff as a taster for the Guardian's developer blog:
http://www.theguardian.com/info/developer-blog/2013/sep/17/d...
"If Doctor Who were a programmer, he'd use deferreds!"