Harshil Chovatiya - Day 15:Introduction to DOM Manipulation

on
Harshil Chovatiya - Day 15:Introduction to DOM Manipulation

Harshil Chovatiya - Day 15 : Introduction to DOM Manipulation

The Document Object Model (DOM) is a critical component of web development, allowing us to interact with and manipulate web page content using JavaScript. In this tutorial, we will explore DOM manipulation step by step, starting with basics.

Harshil Chovatiya - Day 15:Introduction to DOM Manipulation

Introduction to the DOM

Today, we'll begin by gaining a foundational understanding of DOM, its significance, and how it represents 1 structure of an HTML document. DOM serves as a bridge between 2 static HTML structure and dynamic JavaScript, enabling us to change document structure, style, and content programmatically.

Understanding DOM:

DOM is essentially a hierarchical representation of an HTML document, where each HTML element becomes a node in 3 tree. For instance, consider this simple HTML document:

            
            
                <!DOCTYPE html>
                <html>
                <head>
                    <title>DOM Introduction</title>
                </head>
                <body>
                    <h1>Hello, DOM!</h1>
                    <p>This is a paragraph.</p>
                </body>
                </html>

Here, we have an <h1> element and a <p> element within 4 <body>.

Accessing DOM with JavaScript:

Let's use JavaScript to access and manipulate these elements. JavaScript provides various methods to access elements within DOM, and here we'll demonstrate using getElementsByTagName:

                    
                    
         // Select the h1 element by its tag name
         var heading = document.getElementsByTagName("h1")[0];
    
         // Access the text content of the h1 element
         console.log(heading.textContent); // Outputs: "Hello, DOM!"
    
         // Change the text content of the h1 element
         heading.textContent = "Manipulated Heading";

In this example, we accessed <h1> element and modified its text content.

Conclusion:

Understanding DOM is fundamental in web development because it enables dynamic interactions with web pages. In this first step, we've learned how to access and manipulate DOM elements using JavaScript. As we progress through next days, we'll delve into more advanced DOM manipulation techniques, event handling, and practical projects that will enhance your skills in building dynamic web applications. Stay tuned!

Social Media

Comments

Post a Comment