How to Retrieve CSS Values from External Stylesheets Without Elements in jQuery?

Retrieving CSS Values from External Stylesheets Using Javascript/jQuery

One common task in web development is accessing values from external CSS files. While the jQuery method $('element').css('property') can retrieve computed styles for existing elements, it becomes challenging when the target element has not yet been dynamically generated.

Is there an alternative?

Thankfully, with jQuery, we can utilize a clever trick to fetch CSS values without relying on actual elements. Let's explore the solution:

jQuery Solution:

We can create a hidden copy of the target element using the following steps:

1. Create a placeholder element with jQuery:

   var $p = $("<p></p>").hide().appendTo("body");

2. Access the CSS value using the standard 'css()' function:

   console.log($p.css("color"));

3. Remove the hidden element after retrieving the value:

   $p.remove();

Example:

Consider the following CSS and HTML:

p { color: blue; }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Using the jQuery solution, we can retrieve the 'color' value:

(function() {
    var $p = $("<p></p>").hide().appendTo("body");
    console.log($p.css("color"));
    $p.remove();
})();

This trick allows us to get CSS values without relying on the existence of the target element on the page, making it a useful technique for dynamically generated content.

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