Complicated lore
Complicated lore
Original post: fedi.aria.dog (fat Yoshi Akkoma?)
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32 评论
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As a backend developer this could equally be real front end stuff or satire to take the piss out of it. To me the entire DOM stuff is as understandable as magical lore anyway.
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Shadow DOM trees are very real, and I feel like a Wizard trying to decrypt ancient runes every time I have to deal with them, so you're not far off.
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ELI a Backend Developer?
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The browser has an internal model for representing the HTML document, called the Document Object Model (DOM). This DOM happens to be tree-shaped, because HTML is tree-shaped. And certain logic in a browser gets applied to subtrees, like e.g. most CSS rules.
Sometimes, however, you want a subtree to not get affected by what's going on in the main tree, for example when including an SVG into that tree, or if you're offering JavaScript library with a pre-built component.
And yeah, that is what the Shadow DOM does. It also shields the rest of the DOM from what you're doing inside the Shadow DOM. And there's certain mechanisms to selectively allow interaction across the shadow boundary, e.g. when providing a pre-built component, you might still want the user to be able to style parts of it. -
If you’ve ever built a backend MVC style (Model, View, Controller) it’s very similar but for web documents instead of remote procedure calls.
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I think the other comment was an excellent explanation of what the DOM is for somebody with a little bit of computer science experience at least.
But front end vs back end development explained like youre five:
- a front end developer makes what you can see when you use some software (the term is mostly used when talking about web development, but almost all business software is websites today). So they know how to place buttons in the right place, how to make it look good or move around or what ever you want your website to do. I.E display a form to fill out when you want to check out your shopping basket in a web shop.
- a back end developer makes the logic that happens behind the scenes and makes it available for the front end. I.E. Pass on the data from the form the user just entered to the orders database.
- a full stack developer knows how to do both.
Edit: just realised I misunderstood your question. Keeping the comment though since somebody Else might not know the difference between backend and frontend
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Ah yeah, I'm a backend developer already, I was wondering what the heck a Shadow DOM is (as opposed to a regular DOM which I do understand). Luckily some of the other comments put together give me a decent summary.
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It is very much real: https://developer.mozilla.org/en-US/docs/Glossary/Shadow_tree
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Thank you for not shitting on frontend. Have a wonderful day
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It wasn't meant as shitting on front end. I love a good gui. I just don't understand half of the things you guys work with.
I work mostly with business logic. Integtations, APIs and process automation etc. GUI stuff is quite far from my day to day so I don't have any incentives to learn at work either.
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I know, I wasn't being sarcastic or anything. Many times when frontend comes up in online spaces, the comments are flooded with people shitting on frontend out of ignorance. You didn't do that, and it was refreshing.
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Everyone knows you just keep guessing until you get it right.
Don't worry about how janky or slow it makes the UI. That's basically a requirement for the modern browser.
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The Shadow Dom just means pseudo elements. Obviously they have to exist somewhere so they exist in the shadow Dom but it's pretty easy to access you basically just do it just like you would any other Dom node.
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I haven't touched any front end code since I was a junior about 15 years ago. My CS degree didn't involve any more gui than simple stuff, so I was very overwhelmed by it. I ended up focusing on database work and business processes instead.
The way the DOM and shadow DOM is described now seems logical, so I guess I shouldn't have too much issue wrapping my brain around the concepts should I end up needing it in the furure. But I am very fond of where I am working purely with business logic and leaving the graphics to other people.
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32 评论