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POWhat would make offsetParent null?
 

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    <p>I am trying to do positioning in JavaScript. I am using a cumulative position function based on the <a href="http://www.quirksmode.org/js/findpos.html" rel="noreferrer" title="Find position">classic quirksmode function</a> that sums <code>offsetTop</code> and <code>offsetLeft</code> for each <code>offsetParent</code> until the top node.</p> <p>However, I am running into an issue where the element I'm interested in has no <code>offsetParent</code> in Firefox. In IE <code>offsetParent</code> exists, but <code>offsetTop</code> and <code>offsetLeft</code> all sum up to 0, so it has the same problem in effect as in Firefox.</p> <p>What would cause an element that is clearly visible and usable on the screen to not have an <code>offsetParent</code>? Or, more practically, how can I find the position of this element in order to place a drop-down beneath it?</p> <p><strong>Edit</strong>: Here's how to reproduce one particular instance of this (not solved by the currently-accepted answer):</p> <ol> <li>Open the <a href="http://stackoverflow.com">home page of Stack Overflow</a>.</li> <li><p>Run the following code in the Console of the web browser (e.g. Chromev21):</p> <pre class="lang-js prettyprint-override"><code>var e = document.querySelector('div'); console.log(e); // &lt;div id="notify-container"&gt;&lt;/div&gt; do{ var s = getComputedStyle(e); console.log(e.tagName,s.display,s.visibility,s.position,e.offsetParent); } while(e=e.parentElement) // DIV block visible fixed null // BODY block visible static null // HTML block visible static null </code></pre></li> </ol> <p><strong>Why is the <code>offsetParent</code> of that element <code>null</code>?</strong></p>
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    1. USBrian Ramsay
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    1. COPlease post some sample code.
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      1. USDiodeus - James MacFarlane
    2. COA real world example showing the faulty element would help...
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    3. COIn your case, it's because of `position:fixed` - there is no layout parent
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      1. USBergi
 

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