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POHow can I add a `loading...` icon to jQuery UI's autocomplete widget
 

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  1. POHow can I add a `loading...` icon to jQuery UI's autocomplete widget
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    <p>I'm trying to modify <a href="http://jqueryui.com/autocomplete/" rel="nofollow">jQuery's autocomplete widget</a> to have the input's background color change while the script is searching for suggestions. Here is my attempt (or have a look at <a href="http://jsfiddle.net/Shawn/hbP7N/" rel="nofollow">my attempt on jsfiddle</a>):</p> <p><strong>html</strong></p> <pre><code>&lt;label for="numbers"&gt;Numbers: &lt;/label&gt; &lt;input id="numbers" /&gt; </code></pre> <p><strong>javascript</strong></p> <pre><code>var numbers = [], nb = 10000, i; for (i = 0; i &lt; nb; i += 1) { numbers.push(i.toString()); } function color (color) { $('#numbers').css({ background: color }); } $("#numbers").autocomplete({ source: numbers, search: function (event, ui) { console.log('search event fired'); color("red"); }, open: function (event, ui) { console.log('open event fired'); color("green"); }, close: function (event, ui) { console.log('close event fired'); color("white"); } }); </code></pre> <p>As you can see, I'm logging the <code>search</code>, <code>open</code> and <code>close</code> events so I can see when they are fired.</p> <p>As expected, typing in <code>5</code> (an existing value) fires the <code>search</code> event and logs the corresponding message, and, a few seconds later, fires the <code>open</code> event and logs its corresponding message. Since I put 10000 entries in there, there is a noticeable delay between the <code>search</code> event and the <code>open</code> event (something like 1 second).</p> <p>What baffles me is that when the log message associated to the <code>search</code> event appears, it is not followed by the background color changing to red as should be expected. Instead, it remains white until the <code>open</code> event occurs, then becomes green (as expected after the open event). If, however, I type in <code>a</code> (a non-existing value), the background color goes red without problem (notice the open event never occurs in this case because no corresponding value is found). What's happening here?</p> <p>For the curious, I'm ultimately trying to have a little <code>loading</code> icon appear while the search is underway (a feature which I am surprised isn't shipped with the widget out of the box). The background color change is a first step in that direction.</p> <p><strong>UPDATE</strong></p> <p>I made <a href="http://jsfiddle.net/Shawn/TMMHE/1/" rel="nofollow">another attempt</a> which shows that the instruction following <code>console.log</code> is indeed called, but the visual effects appear only much later. Here is the code I'm using: </p> <pre><code>$("#numbers").autocomplete({ source: numbers, search: function (event, ui) { console.log('search event fired'); $('#numbers').css({ marginTop: "5em" }); console.log('search callback done'); } }); </code></pre> <p>If you try it out, you'll see that both messages are logged before the field is displaced by the addition of a top margin. Somehow, the margin is added at the right time, but the page is not being redrawn at the right time...</p>
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    1. COhttp://stackoverflow.com/questions/3843054/jquery-ui-autocomplete-ui-autocomplete-loading
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    2. COhttp://stackoverflow.com/questions/4489607/jquery-autocomplete-how-to-show-an-animated-gif
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    3. CO@user1477388 Neither of these links has proved helpful. Was this what you had in mind? http://jsfiddle.net/Shawn/FTP8s/
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