How to load CSS using jquery

I have loaded a css file on server so I am having a URL with me. How can i load it in my perl code using JQuery ?

So currently I am hardcoding the css in my mason page which is missing from the page something like this

JQ.onReady('show', function(){
    JQ.addStyles({styles: ["\n\n.ap_classic { border-top:1px solid #ccc;border-left:1px solid #ccc;border-bottom:1px solid #2F2F1D; border-right:1px solid   #2F2F1D;background-color:#EFEDD4;padding:3px; }  .ap_classic .ap_titlebar { color:#86875D;font-size:12px;padding:0 0 3px 0;line-height:1em; }  .ap_classic .ap_close { float:right; }  .ap_classic .ap_content { clear:both;background-color:white;border:1px solid #ACA976;padding:8px;font-size:11px; } "]});
});

I want to avoid hardcoding this css ?

I don't get why you can not just insert the <link/> element in the <head/> section, but here's a jQuery snippet:

$('head').append( $('<link rel="stylesheet" type="text/css" />').attr('href', 'your stylesheet url') );

Again, as per Dynamically loading css stylesheet doesn't work on IE.

You need to set the href attr last and only after the link elem is appended to the head:

$('<link>')
  .appendTo('head')
  .attr({
      type: 'text/css', 
      rel: 'stylesheet',
      href: '/css/your_css_file.css'
  });

I like being consistent about language and file type (ex: don't mix css with html). So I would go for creating a style.css file and loading it into a tag with jQuery.

index.html

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
    <div>
        <style id="import"></style>
        <h2 class="red">this is red</h2>
    </div>
    <script type="text/javascript">
        $( document ).ready(function() {
            $( "#import" ).load( "./style.css" );
        });
    </script>
</body>
</html>

style.css

.red{
    color: red;
}

How to load CSS using jquery

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