[javascript] How to get the background color code of an element in hex?

How do I get the background color code of an element?

console.log($(".div").css("background-color"));

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
<div class="div" style="background-color: #f5b405"></div>

What I want

#f5b405

Adding on @Newred solution. If your style has more than just the background-color you can use this:

$(this).attr('style').split(';').filter(item => item.startsWith('background-color'))[0].split(":")[1]

There's a bit of a hack for this, since the HTML5 canvas is required to parse color values when certain properties like strokeStyle and fillStyle are set:

var ctx = document.createElement('canvas').getContext('2d');
ctx.strokeStyle = 'rgb(64, 128, 192)';
var hexColor = ctx.strokeStyle;

My beautiful non-standard solution

HTML

<div style="background-color:#f5b405"></div>

jQuery

$(this).attr("style").replace("background-color:", "");

Result

#f5b405

function getBackgroundColor($dom) {
    var bgColor = "";
    while ($dom[0].tagName.toLowerCase() != "html") {
      bgColor = $dom.css("background-color");
      if (bgColor != "rgba(0, 0, 0, 0)" && bgColor != "transparent") {
        break;
      }
      $dom = $dom.parent();
    }
    return bgColor;
  }

working properly under Chrome and Firefox

This Solution utilizes part of what @Newred and @Radu Di?a said. But will work in less standard cases.

 $(this).attr('style').split(';').filter(item => item.startsWith('background-color'))[0].split(":")[1].replace(/\s/g, '');

The issue both of them have is that neither check for a space between background-color: and the color.

All of these will match with the above code.

 background-color: #ffffff
 background-color:      #fffff;
 background-color:#fffff;

You have the color you just need to convert it into the format you want.

Here's a script that should do the trick: http://www.phpied.com/rgb-color-parser-in-javascript/

In fact, if there is no definition of background-color under some element, Chrome will output its background-color as rgba(0, 0, 0, 0), while Firefox outputs is transparent.