(public).sospep.events ~ view task ~ CREATE-article-jquery-deferred-aka-promises

<h1 style="text-align: center;">CREATE-article# #</h1>
<h2>[previously]</h2>
<ol>
<li><strong>[2017-08-25][00:00] NEW task IN ?</strong></li>
<ol>
<li>] # 7389 - CREATE-article# #&nbsp;</li>
</ol>
<li><strong>[00:00] NEW article IN&nbsp;</strong></li>
<ol>
<li>] # # - &nbsp;jquery defferred - mastering the art of the promise&nbsp;</li>
</ol></ol>
<h2>[currently]</h2>
<ol>
<li><strong>[] PASS -&nbsp;</strong></li>
<ol>
<li>]&nbsp;</li>
<li>] EXAMPLE &nbsp;</li>
</ol>
<li><strong>[]&nbsp;</strong></li>
<li><strong>[] todo</strong></li>
<ol>
<li>x] add create-article task, # 7389, this</li>
<li>x] add reference to this task on index</li>
<li>x] add reference to index on this task</li>
<li>]&nbsp;</li>
<li>] content - add reference to video tutorials ( get BM from saf)</li>
<li>] content - add notes from scrap</li>
<li>]</li>
</ol></ol>
<h2>[next]</h2>
<ol>
<li>]</li>
<li>] entering the lovely world of asynch calllback handling with&nbsp;</li>
<li>] the OnSuccess callback being passed to so many</li>
<li>] var OnSuccess - defining the OnSuccess callback handler in your , EX on pg&nbsp;</li>
</ol>
<h2>[reference]</h2>
<div><ol>
<li>] # 7380 - project-00n - <a href="/view/task?id=7380" target="_blank">index</a>&nbsp;- list of all articles related to this project&nbsp;</li>
<li>] # 7354 - LIST-contract#-026 - previous notes on jq deferred / js promises</li>
<li>] # 7376 - 2017-06-20 - misc&nbsp;</li>
<li>]&nbsp;<a href="https://www.youtube.com/watch?v=zD-JoRDk8ig">Promises, Promises: Unlocking the Power of jQuery's Deferreds - Brian Klaas - YouTube</a>&nbsp;</li>
<li>]&nbsp;<a href="https://www.youtube.com/watch?v=104J7_HyaG4" target="_blank">How to Use Javascript Promises - YouTube</a>&nbsp;</li>
<li>]&nbsp;<a href="https://www.youtube.com/watch?v=swdWUWtGxR4" target="_blank">JavaScript Promises: The Basics - YouTube</a>&nbsp;</li>
<li>]&nbsp;<a href="https://www.youtube.com/watch?v=bcjq3koKpFE" target="_blank">An Intro to AJAX Promises in jQuery - YouTube</a>&nbsp;</li>
<li>] youtube ? = 'jquery deferred tutorial'</li>
</ol><hr />&nbsp;</div>
<div>] Promises are a cleaner way of doing javascript callbacks</div>
<div>] better way of handling 'asynch' operations</div>
<div>] promise are part of the js standard in es6</div>
<div>] use 1 deferred object VS using multiple callbacks, ex ( OnSuccess, OnFailure, ...)</div>
<div>] promises have a 'status' property, the status can be either 'pending' or 'resolved'</div>
<div>] the status property is immutiable, aka it cannot be changed by other objects code, other then when the .&nbsp;</div>
<div><hr /><strong>EXAMPLE - generic</strong></div>
<div>return $.deferred =&gt; {</div>
<div>$.when( getSomething() )</div>
<div>.done( (something)&nbsp;</div>
<div>doSomething(something) )</div>
<div>}.promise();</div>
<div>&nbsp;</div>
<div><hr /><strong>EXAMPLE - specific - single object&nbsp;</strong></div>
<div>return $.deferred =&gt; {</div>
<div>$.when ( getAvailableCar() )</div>
<div>.done((car) =&gt; {&nbsp;</div>
<div>&nbsp;car.availability = false;</div>
<div>// process EX = carsAvailable.push(car);</div>
<div>&nbsp;</div>
<div>})&nbsp;</div>
<div>}.promise();&nbsp;</div>

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