๐ Topic Summary
DOM manipulation is how we use code (like Python or JavaScript) to change the structure, style, or content of a webpage. Think of the DOM (Document Object Model) as a tree-like structure representing the HTML elements of a website. With DOM manipulation, we can add new elements, remove existing ones, change text, update styles, and much more, all dynamically, making websites interactive and responsive.
In Grade 8 Computer Science, learning DOM manipulation provides a foundation for creating engaging web applications. Using introductory languages like Python (with libraries like Selenium) or JavaScript, students can understand how to make a website react to user actions, creating a dynamic user experience. This is a fundamental skill for any aspiring web developer! โจ
๐งฎ Part A: Vocabulary
Match the term with its definition:
| Term |
Definition |
| 1. DOM |
A. A programming language commonly used for web development. |
| 2. Element |
B. A single item in an HTML document, like a paragraph or heading. |
| 3. JavaScript |
C. The structure of an HTML page represented as a tree. |
| 4. Attribute |
D. A characteristic or property of an HTML element (e.g., class, id). |
| 5. Node |
E. A generic term for any object in the DOM tree, including elements and text. |
Answer Key:
- ๐ 1. DOM - C
- ๐ก 2. Element - B
- ๐ 3. JavaScript - A
- ๐ง 4. Attribute - D
- ๐ 5. Node - E
โ๏ธ Part B: Fill in the Blanks
Fill in the blanks with the correct words from the list: element, JavaScript, DOM, attribute, dynamic.
The _______ is a model that represents the structure of an HTML document. We can use _______ to manipulate the _______ of a webpage, changing its _______ content and style. An _______ like 'class' can be modified to change the appearance of an element. This allows us to create _______ and interactive web pages.
Answer Key:
- ๐ The DOM is a model that represents the structure of an HTML document.
- ๐ก We can use JavaScript to manipulate the element of a webpage, changing its dynamic content and style.
- ๐ An attribute like 'class' can be modified to change the appearance of an element.
- ๐ This allows us to create dynamic and interactive web pages.
๐ค Part C: Critical Thinking
Imagine you want to change the color of a button on a webpage when a user clicks it. Explain the steps you would take using DOM manipulation with JavaScript to achieve this. Be specific about the methods or properties you would use. ๐