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POTrack which JSON objects have been output
 

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    <p>I'm outputting 20 or so JSON objects randomly by setting the index to a <code>randomNumber()</code> initially when the page is loaded. </p> <p>I'm refreshing each JSON object individually that has already been output on a timeInterval. To keep track of which JSON items have been output I am storing the index of each item into an array via <code>arrUsed.push[index]</code> </p> <p>Now trying to write the function that will <code>update()</code> each JSON objects individually and am currently stuck on how I can update the each div with the information from a new JSON object that has not already been output (pushed to the <code>arrUsed[]</code>).</p> <p>Here's the function I have so far:</p> <pre><code>function reloadItems() { var itemTotal = $('div.item').length; // Total number of items loaded initially var randomNumber=Math.floor(Math.random()*301) //returns number index = randomNumber; // Sets index to be used in JSON data to random number } </code></pre> <p>The array that contains the already output index's is declared globally: <code>arrUsed = [];</code> Each item that is output initially when the page load is being stored to the array fine, so that part is covered. It's a matter of choosing a random JSON object, checking to ensure it is not in the array/not been output already, and then updating the div on the page.</p> <p>Here's the <a href="https://stackoverflow.com/questions/14264647/use-json-data-outside-of-initial-ajax-call-access-leftover-json-data/14265131#comment19826534_14265131">previous question</a> that has led me to this point</p>
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    1. COwhy not just put all the content in DOM and hide all but 20, then display others in timer?
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    2. COHmm didn't think of that option at all. Since I have about 300 json objects to start and it will become about 600 I would assume bad practice / performance issues from outputting 300-600 divs hidden and then displaying them as needed... Am i understanding what you are referencing?
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    3. COFYI - no such thing as a `JSON object` ..JSON is a string data format
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