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POJSon/Jquery request with a setTimeout always returns a "null" result? (for Twitter Search API)
 

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  1. POJSon/Jquery request with a setTimeout always returns a "null" result? (for Twitter Search API)
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    <p>I make a call to the twitter API. 100 posts are retreived + a properties that tells me what the next page to call is. So I wait 5 sec. and call that next page, but the JSon results in the callback function is always null the second time... I think it's probably a JQuery problem...</p> <p>Here's the code to test it if you want :</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script type="text/javascript" src="./jquery-1.4.2.min.js"&gt;&lt;/script&gt; &lt;script&gt; function test() { var rqUrl = "http://search.twitter.com/search.json?q=%23apple+OR+%23ipad&amp;rpp=100&amp;callback=?" callTwitterSearchApi(rqUrl); } function callTwitterSearchApi(tiwtterRequestUrl) { debug("request to twitter : " + tiwtterRequestUrl); // *** FIRST CALL WORKS GREAT... *** $.getJSON(tiwtterRequestUrl, callTwitterSearchApi_callback); } function callTwitterSearchApi_callback(jsonPostsResults) { debug("callback"); if (jsonPostsResults == null) { debug("Why is jsonPostsResults null? If I copy paste the request inside a browser, I get something =("); return; } if (jsonPostsResults.error != undefined &amp;&amp; jsonPostsResults.error != "") { debug("twitter api error"); } var posts = new Array(); $(jsonPostsResults.results).each(function() { posts.push(this); }); debug("Number of posts : " + posts.length); if (jsonPostsResults.next_page != undefined &amp;&amp; jsonPostsResults.next_page.trim() != "") { debug("calling next request in 5 sec..."); // *** WHEN COMMING BACK FROM THAT LINE, JSON RESULTS == NULL?! **** setTimeout("callTwitterSearchApi(\"http://search.twitter.com/search.json" + jsonPostsResults.next_page + "\")", 5000); } } function debug(message) { document.getElementById('debug').innerHTML = message + "\n" + document.getElementById('debug').innerHTML; } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;input type="button" onclick="test();" value="test" /&gt;&lt;br /&gt; &lt;textarea id="debug" cols="80" rows="20"&gt;&lt;/textarea&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>So, at line 20, at the second callback (back from the setTimeout), the parameter "jsonPostsResults" is always returned as null... I have no idea why. If I copy paste that 2nd request in a browser, it returns 100 results. Anybody had a problem like that with the Ajax/JQuery functions when calling it with a setTimeout?</p>
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    1. USmrmuggles
    1. USmrmuggles
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      1. POJSon/Jquery request with a setTimeout always returns a "null" result? (for Twitter Search API)
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      1. VTUpMod
    1. COHave you tried debugging in Firebug - if so what do it say about the problem?
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      1. POJSon/Jquery request with a setTimeout always returns a "null" result? (for Twitter Search API)
      1. USTheSteve0
    2. COYes I tried. Not much, it pops up back to the callTwitterSearchApi_callback with the null paramameter the 1st time it's called from the setTimeout. I tried to kill the timer too, nothing... weird :(
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      1. POJSon/Jquery request with a setTimeout always returns a "null" result? (for Twitter Search API)
      1. USmrmuggles
 

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