Summary of "Grundlagen der Webentwicklung - Erklärung - Relative und absolute Pfade"
Summary of "Grundlagen der Webentwicklung - Erklärung - Relative und absolute Pfade"
The video explains the concepts of relative and Absolute Paths in web development using an analogy of a shared apartment with rooms representing folders/directories on a Server.
Main Ideas and Concepts
- Paths in Web Development:Paths specify the location of files (e.g., images, HTML documents) relative to a starting point.
- Relative Paths:
- Always start from the location of the current file (the "room" you are in).
- Navigate through folders ("rooms") relative to the current position.
- Use slashes ("/") to move into subfolders.
- Use
../to move up one folder level ("get out of the room"). - Example: If you are in Paul's room and want to access a file in Anne's room, you first go up one level, then into Anne's room.
- Absolute Paths:
- Always start from a fixed, predetermined location (the Root Directory or domain).
- Represent a full address starting from the root or the domain name (e.g.,
http://www.katzen-wg.de). - Useful when you want to access a resource regardless of your current location in the folder structure.
- Must include the protocol (
http://orhttps://) to prevent the browser from interpreting the path as relative.
Detailed Explanation Using the Apartment Analogy
- The Server is like a shared apartment.
- The Root Directory is the main room or entrance.
- Subfolders are like individual rooms (Paul’s room, Anne’s room, kitchen, bathroom).
- The HTML file is a person inside a room trying to find the cat (a file or resource).
- If the cat is in the same room, just call its name (e.g.,
cat.jpg). - If the cat is in another room, you must specify the path to get there:
- Move into a subfolder with
/(e.g.,Paul/cat.jpg). - Move up one folder level with
../(e.g.,../Anne/cat.jpg).
- Move into a subfolder with
- Absolute Paths are like having the full address of the apartment and entering through the front door every time (e.g.,
http://www.katzen-wg.de/Küche/Bart/cat.jpg).
Key Lessons and Takeaways
- Relative Paths depend on the current file’s location and can involve moving up (
../) or down folders. - Absolute Paths start from a fixed root or domain and are independent of the current file’s location.
- Including the protocol (
http://orhttps://) in Absolute Paths is crucial for correct browser interpretation. - Understanding these concepts is essential for correctly linking resources in web development.
Summary of Methodology / Instructions for Using Paths
- To create a relative path:
- Start from the current file location.
- Use folder names separated by slashes (
/) to move down into subfolders. - Use
../to move up one folder level. - Combine these to navigate to the target file.
- To create an absolute path:
- Start with the protocol and domain name (e.g.,
http://www.example.com). - Add the full folder path to the target file starting from the root.
- Do not use
../in Absolute Paths since you always start at the root.
- Start with the protocol and domain name (e.g.,
Speakers / Sources Featured
The video features a single, unnamed narrator or instructor explaining the concepts using the shared apartment analogy.
End of Summary
Category
Educational
