Can CSS interfere with the execution of the document ready function?

When I have a large CSS file on my page, will my document.ready execution wait for the CSS file to load?

<!DOCTYPE html>
<html>
    <head>
        <link rel="stylesheet" type="text/css" href="large-amount-file.css">
    </head>
    <body>
        <p>If you click on me, I will disappear.</p>
        <p>Click me away!</p>
        <p>Click me too!</p>
        <p>fsdfsd</p>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
        <script>
            $(document).ready(function(){
                alert("hi");
            });
        </script>
    </body>
</html>

Answer №1

$(document).ready is triggered when the HTML document has finished loading and the DOM is ready, whereas $(window).load is triggered once the entire page, including all frames, objects, and images, has been fully loaded.

This means that large CSS files will not delay the execution of the $(document).ready function.

Answer №2

Will CSS interfere with the document ready function?

The answer is No

$(document).ready signifies that when the Document is ready. In this context, the Document refers to the HTML part. Therefore, once the HTML is fully loaded, the script inside $(document).ready will be executed without waiting for other scripts or CSS files to load, as CSS is not considered part of the document.

From the Jquery Document

A page cannot be safely manipulated until the document is "ready." jQuery automatically detects this readiness status for you. Code within $( document ).ready() will only run after the Document Object Model (DOM) of the page is prepared for JavaScript execution. Code within $( window ).load(function() { ... }) will execute once the entire page, including images and iframes, is completely loaded, not just the DOM itself.

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