Why setState not set appending my array into state?

Question

I have to create a text area which taken multiple links then I split() into array yeah Its working fine, but I want to set that array into my state in

Answer 1

It probably is being appended, it's just not available until the next render.

From the documentation:

setState() does not always immediately update the component. It may batch or defer the update until later. This makes reading this.state right after calling setState() a potential pitfall. Instead, use componentDidUpdate or a setState callback (setState(updater, callback)), either of which are guaranteed to fire after the update has been applied.