HTML, CSS and JavaScript are responsible for structure, style and dynamic functions in web development respectively. 1. HTML defines the web structure, 2. CSS is responsible for style and layout, 3. JavaScript provides dynamic interaction and functions.

introduction

In modern web development, HTML, CSS and JavaScript are the three musketeers, who jointly build the websites and applications we browse every day. Today we will explore how these three work together to unveil their mystery. After reading this article, you will have a deeper understanding of how to use these three technologies to build dynamic, beautiful and powerful web pages.

Review of basic knowledge

HTML (HyperText Markup Language) is the skeleton of a web page, which defines the content structure of a web page. CSS (Cascading Style Sheets) is the outer garment of a web page, which is responsible for the style and layout of the web page. JavaScript is the soul of web pages, which makes web pages dynamic and interactive. Understanding the basic functions of these three is the basis for us to dive into how they work together in depth.

Core concept or function analysis

Definition and function of HTML, CSS and JavaScript

HTML defines the structure and content of a web page, such as titles, paragraphs, pictures, etc. CSS is responsible for the visual representation of the web page, including color, font, layout, etc. JavaScript gives web page dynamic and interactive, such as responding to user clicks, dynamically updating content, etc.

Let's look at a simple example:

    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Example</title>
    <style>
        .button {
            background-color: #4CAF50;
            color: white;
            padding: 15px 32px;
            text-align: center;
            text-decoration: none;
            display: inline-block;
            font-size: 16px;
            margin: 4px 2px;
            cursor: pointer;
        }
    </style>


    <button class="button" onclick="changeText()">Click me</button>
    <p id="demo">Hello World</p>
<pre class='brush:php;toolbar:false;'><script>
    function changeText() {
        document.getElementById("demo").innerHTML = "Text Changed!";
    }
</script>