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POFade HTML element with raw javascript
 

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    <p>It's my second question of the day related to the same problem, so I apologize for that.</p> <p>I was able to put together a function to "fade out" an element, and it works just fine, my problem is that when I try to <strong>reverse</strong> it, so the element "fades in" it does not work. I've tried to change the obvious, but I can't understand what I'm doing wrong.</p> <p>My code so far is as follows:</p> <p>Given I have a "div" like so:</p> <pre><code>&lt;div id="test" style="width:200px; height:200px; display:block; opacity:1; background-color:red;"&gt;&lt;/div&gt; </code></pre> <p>The JavaScript function that I'm using to fade it out is:</p> <pre><code>var getElement = document.getElementById('test'); function fadeOut(elem, speed){ if(!elem.style.opacity){ elem.style.opacity = 1; } var desvanecer = setInterval(function(){ elem.style.opacity -= .02; if(elem.style.opacity &lt; 0){ clearInterval(desvanecer); } }, speed / 50); } fadeOut(getElement, 500); </code></pre> <p>Could somebody take a look at this and let me know what I'm doing wrong, all I want to do is "FADE IN" an element to an opacity equal to "1".</p> <p>By the way, I can't use jQuery, however I'm eager to learn this way.</p> <p>Thanks</p> <p>My attemp to reverse the function is as follows:</p> <pre><code>var getElement = document.getElementById('test'); function fadeIn(elem, speed){ if(elem.style.opacity){ elem.style.opacity = 0; } var desvanecer = setInterval(function(){ elem.style.opacity += .02; if(elem.style.opacity &gt; 1){ clearInterval(desvanecer); } }, speed / 50); } fadeIn(getElement, 500); </code></pre>
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    1. COThis will not work in any version of IE.
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    2. COCan you show us your fade **in** code?
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    3. COI will add my "fadeIn" code at the top
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