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    <p>The placement can be a function instead of a string. An example of auto placement written by <strong>fat</strong> and then ported to the most recent version of bootstrap by <strong>wleeper</strong> is in one of the github issues on the project here: <a href="https://github.com/twitter/bootstrap/issues/345" rel="noreferrer">https://github.com/twitter/bootstrap/issues/345</a></p> <p>Here is the result of compiling the CoffeeScript to JavaScript:</p> <pre><code>$("a[rel=popover]").popover({ placement: function(tip, element) { var $element, above, actualHeight, actualWidth, below, boundBottom, boundLeft, boundRight, boundTop, elementAbove, elementBelow, elementLeft, elementRight, isWithinBounds, left, pos, right; isWithinBounds = function(elementPosition) { return boundTop &lt; elementPosition.top &amp;&amp; boundLeft &lt; elementPosition.left &amp;&amp; boundRight &gt; (elementPosition.left + actualWidth) &amp;&amp; boundBottom &gt; (elementPosition.top + actualHeight); }; $element = $(element); pos = $.extend({}, $element.offset(), { width: element.offsetWidth, height: element.offsetHeight }); actualWidth = 283; actualHeight = 117; boundTop = $(document).scrollTop(); boundLeft = $(document).scrollLeft(); boundRight = boundLeft + $(window).width(); boundBottom = boundTop + $(window).height(); elementAbove = { top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2 }; elementBelow = { top: pos.top + pos.height, left: pos.left + pos.width / 2 - actualWidth / 2 }; elementLeft = { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth }; elementRight = { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width }; above = isWithinBounds(elementAbove); below = isWithinBounds(elementBelow); left = isWithinBounds(elementLeft); right = isWithinBounds(elementRight); if (above) { return "top"; } else { if (below) { return "bottom"; } else { if (left) { return "left"; } else { if (right) { return "right"; } else { return "right"; } } } } } }); </code></pre> <p>It is working well for me except for one case: if the item is in the upper right corner there is no good spot for the popover to appear that is one of the options and it appears partially off the screen.</p>
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    1. POHow can you ensure twitter bootstrap popover windows are visible?
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    1. POHow can you ensure twitter bootstrap popover windows are visible?
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    1. COThis is a good answer but doesn't solve the problem entirely. The width and height of the tooltip is hardcoded in `actualWidth` and `actualHeight` and there is no way to dynamically get the size of the tooltip before it is rendered.
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      1. USBjörn Lindqvist
    2. CO@BjörnLindqvist That is a good point. I've been thinking about it for a while but it seems like a difficult problem to solve besides adjusting the values to match your popup (assuming it is a common size). One could render it in a hidden iframe or do some other hijinks to determine the size but I can't think of a clean way of doing that.
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    3. COThis is a great solution if you need to flip / re-orientate a twitter boostrap popover to ensure it is visible.
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      1. USRyan Charmley
 

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