Prerequisite 1: Design a HTML page with a div

    <div id="message">
            Default Content
    </div>

Task 1: Display the content in the div in console

    let messageDiv = document.querySelector("#message");
    console.log(messageDiv); // It will return "Default Content";

Note: Default content will be displayed.

Task 2: Update a new message in the div tag

    messageDiv.innerHTML = "Successfully Registered";

Task 3: Insert a html content in the div block

    messageDiv.innerHTML = "<font color='green'>Successfully Registered</font>";