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PO
 

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    <p>I'm going to suggest a small change. One element you weren't clear on is whether or not the treatment1 and treatment2 results are different each time. If they are then do what @raghu and @juan-garcia</p> <pre><code>function onClick() { var treatment1 =$.ajax({url: '/call1'}); var treatment2 = $.ajax({url: '/call2'}); $.when(treatment1, treatment2).done(function(obj1, obj2) { // do whatever else you need }); } </code></pre> <p>If they don't change then do this :</p> <pre><code>var treatment1 =$.ajax({url: '/call1'}); var treatment2 = $.ajax({url: '/call2'}); function onClick() { $.when(treatment1, treatment2).done(function(obj1, obj2) { // do whatever else you need }); } </code></pre> <p>Or some variation of that. Because once they are complete, your callback function will always execute right away. It's still asynchronous, but it doesn't need to wait since everything is ready to go. This serves both use cases. This is a very common pattern for data that may take a few seconds to load before it's functionally useful when drawing a new component in the page. It's a lazy-load mechanism that's very useful. Once it's in though everything looks as if it's responding instantaneously.</p> <p>I reworked the javascript in your example on JSFiddle to show just the basics I think you needed to see. That is <a href="http://jsfiddle.net/MwNN9/" rel="nofollow">here</a>. Given your example, I think the mistake is in believing that resolve must be called multiple times to trigger a behavior. Invoking the done behavior cues a one time behavior and each invocation of done loads a new behavior into the queue. Resolve is called one time. $.when().done() you call as many times as you have behaviors dependent on the specific when() condition.</p>
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    1. POReuse Deferred more than once
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    1. USmangr3n
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    1. COthe way my code is structured, i cannot get the result directly from my ajax service as there is some tratment after the ajax call. Please see my sample code updaded at the end of my thread. Thx
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    2. COhttp://jsfiddle.net/MwNN9/ I forked your code. @seblurtz. There's a misconception, IMO, of how this works. Once resolved cannot re-resolve. You simply have to push $.when(x,y,z).done(doSomethingWithResolvedData); behind the event that you want to trigger that behavior. It **only** waits if any of the deferred are not resolved. Resolve says I'm ready. Each invocation of when is a single follow up behavior. Add a when().done() behavior to each click handler.
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    3. COyes, that was it. Thank you for your help.
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