How to change in javascript background color from css

November 28, 2021

I’m having problems changing the css in javascript.
Here’s what i tried making:

<style id="1">
body {
background-color: pink;
}
</style>

<script>
var myVar = document.getElementById("1").style.backgroundColor = "brown";
</script>

The css is working, it is making the background pink, but the javascript isn’t changing the css background color to brown.

>Solution :

You are attempting to set the background colour of the <style> tag. This is not how it works. Instead of setting the style of the <style> tag, you should set the style of the body itself. This W3Schools Article gives an explanation if you need one.

<head>
    <style>
        body {
            background-color: pink;
        }
    </style>
</head>

<body id="1">

    <script>
        document.getElementById("1").style.backgroundColor = "brown";
    </script>
</body>

It’s also worth noting you don’t need to assign the element to a variable unless you are going to use it later.