How to Determine Empty HTML Elements in jQuery?

Determining Empty HTML Elements in jQuery

For scenarios where conditional execution based on an HTML element's emptiness is necessary, jQuery offers a solution.

The jQuery :empty Selector

To check if an HTML element is empty, utilize jQuery's :empty selector.

<code class="js">if ($('#element').is(':empty')) {
  // do something
}</code>

This selector returns true if the selected element contains no child elements, text, or white space.

Handling Hidden Elements

However, browsers may treat hidden elements, such as spaces and line breaks, differently. To ignore these hidden elements and ensure consistent behavior, consider using the following function:

<code class="js">function isEmpty(el) {
  return !$.trim(el.html());
}

if (isEmpty($('#element'))) {
  // do something
}</code>

This ensures that only visible text content is considered when determining emptiness. Similarly, a jQuery plugin can be created based on this function.

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