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    <p>The main issue here was scoping, as Femi suggested before. You <strong>must</strong> move <code>var timerGetContent = null;</code> outside the function declaration. You also had a logic error in the first condition, <code>status == "login"</code>. You were setting the <code>timerGetContent</code> intervalID to null without clearing it first.</p> <p>So, if you called <code>setTimers("login");</code> after calling <code>setTimers("negitive");</code> without calling <code>setTimers("positive");</code> to first clear the interval, you would always have at least one interval going.</p> <p>I replaced your function calls with console.log statements for testing:</p> <pre><code>var tray_count = 0; var timerGetContent = null; function setTimers(status) { if(status == "login") { tray_count = 0; // Setting the intervalID to null will NOT clear the interval // If we do not clear the interval, calling setTimers('login') // will create a new interval and make previous interval // "unclearable" every time it is called clearInterval(timerGetContent); timerGetContent = null; timerGetContent = setInterval(function() { console.log('login intervalling') },400); } else if(status == "negitive") { tray_count--; if(tray_count == 0 &amp;&amp; timerGetContent == null) { timerGetContent = setInterval(function() { console.log('negitive intervalling') },400); alert("inside negitive"); } } else if(status == "positive") { tray_count++; clearInterval(timerGetContent); // calling clearInterval does not actually unset the intervalID variable // so we need to set it to null manually timerGetContent = null; timerGetBlasts = null; } } </code></pre> <p>Update 2014-07-14: Fixed a formatting typo --cbarrick</p>
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    1. COThanks for the response, I moved timerGetContent outside of the function and made it global and I also cleared the interval inside of "login" and that helped with some of the erratic behavior, however I think my problem now is that javascript only runs one thread at a time and if you click on the button as it starts to execute the server call, then it finishes the server call refreshes the table and the tray goes away with out making tray_count go down. Which then stops the auto refresh until the user clicks on something that goes into the "login" logic of setTimers.
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