What is the best way to retrieve the height of a <DIV> element without factoring in the presence of a horizontal scrollbar with

I have created a unique jQuery plugin that involves utilizing two nested <DIV> elements.

The outer div is set with a fixed width and overflow: scroll, while the inner div (which is wider) houses the content for scrolling purposes.

Everything is functioning correctly, but I am having trouble using JavaScript (with jQuery) to ensure that the height of the inner div matches exactly with the height of the outer div, minus the height of the horizontal scroll bar.

Currently, I am setting the height to be the same as the outer div, minus approximately 20 pixels. This solution is somewhat effective, but it may not be consistent across different browsers and feels like a bit of a hack!

If anyone has any suggestions or guidance on how to achieve this more effectively, I would greatly appreciate it!

javascriptjquerycssscrollbar

Answer №1

To retrieve the height of an element, utilize element.clientHeight. In jQuery, the code would resemble this:

var heightWithoutScrollbar = $('#outer')[0].clientHeight;

Answer №2

I recently discovered a useful function that can help you determine the width of a scrollbar. Check it out here.

function getScrollBarWidth () {  
    var inner = document.createElement('p');  
    inner.style.width = "100%";  
    inner.style.height = "200px";  

    var outer = document.createElement('div');  
    outer.style.position = "absolute";  
    outer.style.top = "0px";  
    outer.style.left = "0px";  
    outer.style.visibility = "hidden";  
    outer.style.width = "200px";  
    outer.style.height = "150px";  
    outer.style.overflow = "hidden";  
    outer.appendChild (inner);  

    document.body.appendChild (outer);  
    var w1 = inner.offsetWidth;  
    outer.style.overflow = 'scroll';  
    var w2 = inner.offsetWidth;  
    if (w1 == w2) w2 = outer.clientWidth;  

    document.body.removeChild (outer);  

    return (w1 - w2);  
};

This function works well for both vertical and horizontal scrollbars, providing a consistent width for either orientation.

Note: Initially, my code presented some issues but after revisions, it now functions as intended. You can test it out here: http://jsbin.com/ejile3

The page will display an alert showing the calculated width of the scrollbar.

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