How Can I Get the Width of a jQuery Element, Whether Specified in Pixels or Percentages?

Determining Element Width in jQuery: Percent vs. Pixels

When working with jQuery-based plugins, it's crucial to accurately determine the width of elements specified by the developer. However, the traditional jQuery methods .width() and .css('width') solely report pixel values, regardless of whether the developer has set a percentage width using CSS.

Solution: Calculating Percentage Width

To address this limitation, we can leverage a custom calculation to determine the element's width based on the specified CSS value:

var width = $('#someElt').width(); // Initial width in pixels
var parentWidth = $('#someElt').offsetParent().width(); // Parent element width
var percent = 100 * width / parentWidth; // Calculate percentage width

This approach allows you to dynamically determine the element's width in either pixels or percentages, depending on the developer's CSS specifications.

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