@rooks/use-previous NPM | npm.io

4.11.2 • Published 3 years ago

Install

Weekly downloads

-

License

MIT

Repository

Last release

3 years ago

@rooks/use-previous

Note: Future updates to this package have moved to the main package rooks. All hooks now reside in a single package which you can install using

npm install rooks

or

yarn add rooks

Rooks is completely treeshakeable and if you use only 1 of the 50+ hooks in the package, only that hook will be bundled with your code. Your bundle will only contain the hooks that you need. Cheers!

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About

Access the previous value of a variable with this React hook

Installation

npm install --save @rooks/use-previous

Importing the hook

import usePrevious from "@rooks/use-previous";

Usage

function Demo() {
  const myInput = useInput("hello world");
  const previousValue = usePrevious(myInput.value);
  return (
    <div>
      <div>
        <input {...myInput} />
      </div>
      <p>
        Current value is <b>{myInput.value}</b>
      </p>
      <p>
        Previous value was <b>{previousValue || "-"}</b>
      </p>
    </div>
  );
}

render(<Demo />);

Arguments

Argument	Type	Description
value	any	The variable whose previous value should be stored

Gif

use react hooks rooks react-hooks.org

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