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copied!<h2>1 jQuery Object to rule them all</h2> <p>Since you use <code>$("#testApp");</code> at the top of the function you could set it as a variable</p> <pre><code>var testAppEl = $("#testApp") </code></pre> <p>Then use that instead of creating a new jQuery object everytime</p> <h2>Use <code>hover</code></h2> <p>You could put this block:</p> <pre><code>// add a jQuery mouseover and mouseout event $("#testApp").on("mouseover", function() { $("#testApp").on("mouseout", function() { </code></pre> <p>Into a <code>.hover()</code>:</p> <pre><code>testAppEl.hover(function() { $(this).css({ "background-image":"url(./images/svg/menucorner-bg-lit.svg)" }); }, function() { $("#testApp div").css({ "background-image":"url(./images/svg/menucorner-bg.svg)" }); }); </code></pre> <h2>Combine <code>off()</code></h2> <p>These two right here can be mixed</p> <pre><code>// Old $("#testApp").off("mouseover"); $("#testApp").off("mouseout"); // New testAppEl.off("mouseover mouseout"); </code></pre> <h2>Use CSS in a better way</h2> <p>As Drew suggested, add classes in a CSS file instead of dynamic, hard to track CSS through jQuery i.e.:</p> <pre><code>.someCSS { background-image: url(./images/svg/menucorner-bg-lit.svg); height: 200px; background-color:#ccc; } </code></pre> <p>Then in your jQuery use</p> <pre><code>testAppEl.addClass("someCSS"); </code></pre> <h2>Strict Type/Value Comparison</h2> <p>Also, for your first <code>if</code> block, you should really be using the strict comparison operator:</p> <pre><code>if (status === 0) { </code></pre>

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