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FAQs about Element Case - We are extending the Element Case Black. Coupon?

Does extending element work in controlled enviroments?

No, extending Element does (as you figured out) work fine in controlled enviroments. @Manngo: And with that test you have actually broken forward compatibility. The point is that the future standard might do something different than your custom method. @Vohuman I’ve already read that article. ...

Can I extend a web component from a native element?

If you are familiar with Web Components or Custom Elements then you might have heard that you can not only extend from HTMLElement but also from other native elements such as HTMLInputElement. The benefits of extending an existing native element are many: ...

Should op extend element prototype?

OP asked if and why he shouldn't extend Element prototype. He did not ask for a solution that does not extend it. Do not modify objects you don't own. Imagine a future standard defines Element.prototype.toggleAttribute. Your code checks if it has a truthy value before assigning your function. ...