آموزش جاوااسکریپت جلسه ۲

Summary of the Video

Introduction

The second session of the JavaScript tutorial introduces learners to creating templates in CodeSandbox. It covers downloading and managing projects locally, structuring HTML elements, and writing JavaScript code efficiently. The session also emphasizes best coding practices, including commenting on the code for better readability.

Main Points Discussed

1. Working with CodeSandbox

• The instructor starts by explaining how to create and manage projects in CodeSandbox.
• Users are guided to access their recent projects and create new ones from predefined templates.
• The process of naming and organizing projects is demonstrated.

2. Setting Up the Project Structure

• A new JavaScript project is created in CodeSandbox, which includes HTML, JavaScript, and CSS files.
• The importance of linking JavaScript files correctly to the HTML document is emphasized.
• The instructor demonstrates how to remove unnecessary files like CSS when focusing only on JavaScript and HTML.

3. Understanding HTML Elements and Their Role

• The <div> element is introduced as a container for different content types.
• The instructor explains how to modify id attributes dynamically to match JavaScript selectors.
• The <p> (paragraph) element is used as an alternative to <div> for displaying text content.

4. Interacting with the DOM Using JavaScript

• The document.getElementById() method is used to select and manipulate HTML elements.
• The video explains how to dynamically update the inner content of an element.
• The importance of properly naming and referencing HTML elements in JavaScript is discussed.

5. Creating and Managing Templates in CodeSandbox

• The instructor demonstrates how to convert a CodeSandbox project into a reusable template.
• The difference between sandbox projects and templates is explained.
• The process of deleting a template or converting it back to a sandbox project before deletion is shown.

6. Downloading and Running Projects Locally

• Users are guided on how to download CodeSandbox projects for local execution.
• Extracting the downloaded files and understanding their folder structure is discussed.
• The video highlights potential issues such as missing content in downloaded files.

Conclusion

This session provides a hands-on introduction to working with CodeSandbox, managing HTML structures, and writing JavaScript code effectively. By the end of the tutorial, learners understand how to create, modify, and download JavaScript-based projects while following best practices in coding and project organization.