abi•3y ago

Using querySelector on Node

I am doing something like:

const nodeList: NodeList = document.querySelectorAll(".foo");
const nodes = [...nodeList];
const result = nodes.map((n: Node) => n.querySelector("span"));

const nodeList: NodeList = document.querySelectorAll(".foo");
const nodes = [...nodeList];
const result = nodes.map((n: Node) => n.querySelector("span"));

The above will not work because querySelector is not from Node, but rather Element. Is there any good way to do this without manually tossing around Nodes?

4 Replies

abiOP•3y ago

Btw, my example is contrived, the real world use case is different. I really can't do it with just one querySelectorAll call in my case.

Andreu Botella•3y ago

even though the returned type is NodeList, only elements can match a (non-pseudo-element) selector and I don't think querySelector(All) works with pseudo-element selectors

abiOP•3y ago

So I could just cast it?

Andreu Botella•3y ago

yeah

Using querySelector on Node

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