Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.
Lære Working with Query Parameters | Advanced React Router Features
React Router Essentials
course content

Kursusindhold

React Router Essentials

React Router Essentials

1. Understanding React Router and URL Structures
2. Implementing React Router in a React App
3. Advanced React Router Features

book
Working with Query Parameters

The useSearchParams is a hook that provides access to the query parameters (search parameters) of the current URL. Query parameters are key-value pairs that follow the question mark (?) in a URL. For example, in the URL http://example.com/products?category=electronics&page=2, the query parameters are category=electronics and page=2.

What Does useSearchParams Return?

The useSearchParams hook returns an array with two elements: an object representing the current query parameters and a function to update the query parameters. Here's how you can use the hook:

js

The searchParams Object

The searchParams object is an instance of the URLSearchParams class. It provides convenient methods to interact with query parameters, such as:

  • get(key): Retrieves the value associated with a specific key;

  • getAll(key): Retrieves all values associated with a specific key;

  • set(key, value): Sets or updates the value of a specific key;

  • append(key, value): Appends a new value to an existing key;

  • delete(key): Deletes a specific key and its associated value;

  • toString(): Returns the query parameters as a string (e.g., "?category=electronics&page=2").

The setSearchParams Function

The setSearchParams function allows you to update the query parameters in the URL. You can pass it an object with key-value pairs to set new parameters or modify existing ones. Here's an example of how to use it:

js

Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 3. Kapitel 5

Spørg AI

expand
ChatGPT

Spørg om hvad som helst eller prøv et af de foreslåede spørgsmål for at starte vores chat

course content

Kursusindhold

React Router Essentials

React Router Essentials

1. Understanding React Router and URL Structures
2. Implementing React Router in a React App
3. Advanced React Router Features

book
Working with Query Parameters

The useSearchParams is a hook that provides access to the query parameters (search parameters) of the current URL. Query parameters are key-value pairs that follow the question mark (?) in a URL. For example, in the URL http://example.com/products?category=electronics&page=2, the query parameters are category=electronics and page=2.

What Does useSearchParams Return?

The useSearchParams hook returns an array with two elements: an object representing the current query parameters and a function to update the query parameters. Here's how you can use the hook:

js

The searchParams Object

The searchParams object is an instance of the URLSearchParams class. It provides convenient methods to interact with query parameters, such as:

  • get(key): Retrieves the value associated with a specific key;

  • getAll(key): Retrieves all values associated with a specific key;

  • set(key, value): Sets or updates the value of a specific key;

  • append(key, value): Appends a new value to an existing key;

  • delete(key): Deletes a specific key and its associated value;

  • toString(): Returns the query parameters as a string (e.g., "?category=electronics&page=2").

The setSearchParams Function

The setSearchParams function allows you to update the query parameters in the URL. You can pass it an object with key-value pairs to set new parameters or modify existing ones. Here's an example of how to use it:

js

Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 3. Kapitel 5
Vi beklager, at noget gik galt. Hvad skete der?
some-alt