Transform the page into a Matrix-inspired design

I decided to transform the appearance of my web pages into a stylish The Matrix theme on Google Chrome, specifically for improved readability in night mode. To achieve this goal, I embarked on the journey of developing a custom Google Chrome extension. The initial step involved crafting a script for the desired functionality.

Goal:

My objective is to create an effect like the following:

Selecting the body tag within each HTML page and applying the following style properties-

background-color: black;
color: lime;

My Approach:

Below is the code snippet that I started with for scripting, although it appears to be encountering some issues. I am seeking assistance in identifying my errors, and any suggestions for improvement would be greatly appreciated.

<!doctype html>
<html>
<head>
    <script type="text/javascript">
        document.getElementsByTagName('body')[0].style.color = "lime";
        document.getElementsByTagName('body')[0].style.background-color = "black";
    </script>
</head>
<body>
    <p>Hello</p>
</body>

</html>

Answer №1

Your script is running before the body tag has been created. To ensure that your code functions as expected, it should be wrapped in an onload function or placed at the end of your HTML document.

<script type="text/javascript">
    window.onload = function() {
      document.getElementsByTagName('body')[0].style.color = "lime";
      document.getElementsByTagName('body')[0].style.backgroundColor = "black";
    }
</script>

Allowing the page to fully load before executing your JavaScript will guarantee that the body tag is present and ready for styling modifications.

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