The error in Typescript arises when trying to access the property 'length' on a Node type which does not exist

I encountered a typescript error while working on my project, it says

Property 'length' does not exist on type 'Node'
.

https://i.sstatic.net/ShgTo.png

In my JavaScript code, I have deconstructed anchorNode from the selection Object.

const selection = window.getSelection()
const {anchorNode} = selection;

Although I can access the length property of anchorNode, typescript is indicating that it does not exist on the type Node.

Any suggestions on how to resolve this issue?

Answer №1

When looking at the anchor, it typically returns a single Node object. Therefore, if you examine the Node properties, you'll notice that there is no length property present.

Although JavaScript may attempt some behind-the-scenes magic like type casting to provide you with the length, TypeScript clarifies that the class does not possess this length property.

If you're seeking the length of the anchorNode's children, you can achieve this by using:

const length = anchorNode.childNodes.length;

This code snippet retrieves the DOM elements beneath the anchorNode. As childNodes yields a NodeList, you can access its property length.


Alternatively, if you desire the length of the text content, you can extract it from the node directly:

const length = anchorNode.textContent.length;

Just remember that the extracted text covers the textual content of the children too.

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