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What's the best and most secure way to take a fragment of html from one document and add it to another html document with Javascript? (lemmy.world)

submitted 1 year ago by MossBear@lemmy.world to c/webdev@programming.dev

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I'm not new to programming, but I am somewhat new to web development and I'm trying to figure out the most preferred way of taking a standalone header from one html document and adding it to other html documents without code duplication. If possible I want to do this with Javascript so I can learn with more basic tools before expanding further.

I've researched this a fair bit, but the advice is a bit confusing since it either seems out of date or possibly not the most secure way of handling things. Is there a preferred way of doing something like this?

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[–] Lmaydev@programming.dev 3 points 1 year ago

I saw custom elements the other day https://developer.mozilla.org/en-US/docs/Web/API/Web_components/Using_custom_elements

They might achieve what you want.