📜  react localstorage - Javascript(1)

📅  最后修改于: 2023-12-03 15:19:43.414000             🧑  作者: Mango

React LocalStorage - Javascript

React LocalStorage is a package that provides easy access to the browser's localStorage API in React components. This library allows you to easily save and retrieve data from the browser's local storage in your React applications.

Installation

To install React LocalStorage, simply run the following command in your terminal:

npm install react-localstorage --save
Usage

Using React LocalStorage is quite simple. Here is an example:

import React, { useState } from "react";
import { useLocalStorage } from "react-localstorage";

const ExampleComponent = () => {
  const [name, setName] = useState("");
  const [storageValue, setStorageValue] = useLocalStorage("name");

  const handleChange = (event) => {
    setName(event.target.value);
  };

  const handleClick = () => {
    setStorageValue(name);
  };

  return (
    <div>
      <label>
        Your Name:
        <input type="text" value={name} onChange={handleChange} />
      </label>
      <button onClick={handleClick}>Save</button>
      <p>Value in local storage: {storageValue}</p>
    </div>
  );
};

In this example, we import useLocalStorage from react-localstorage package. The useLocalStorage hook is used to get and set the value of the "name" key in the browser's local storage.

We also use the useState hook to create a state variable to store the name entered by the user in the input field.

The handleChange function is called whenever the user types something in the input field. This function updates the name state variable with the new value.

The handleClick function is called when the user clicks the "Save" button. This function saves the value of the name state variable to the "name" key in the local storage using the setStorageValue function provided by the useLocalStorage hook.

Finally, we display the value stored in the "name" key in the local storage using the storageValue state variable.

Conclusion

React LocalStorage is a simple and easy-to-use library for accessing the browser's local storage API in React components. It provides a convenient way to store and retrieve data in your React applications.

With the useLocalStorage hook, you can easily read and write to the local storage using familiar React state management techniques.