Integrate WordPress rest Api in Reactjs

Hi There Hope you are fine
Demo here

I will integrate rest API in react js using JWT authentication for that you need a plugin to install in your WordPress and active it.
JWT Auth — WordPress JSON Web Token Authentication.
WordPress JSON Web Token Authentication allows you to do REST API authentication via a token. It is simple, non-complex, and easy to use. This plugin probably is the most convenient way to do JWT Authentication in WordPress.
by useful team

The react app is integrated with wp rest API and crud operation on the posts
steps

1: Open the .htaccess file in the root folder of WordPress and paste

RewriteCond %{HTTP:Authorization} ^(.*)
RewriteRule ^(.*) - [E=HTTP_AUTHORIZATION:%1]
SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1

2: Open the wp-config.php file in the root folder of WordPress and paste

get the secret key from the given link or you put your own
link

define('JWT_AUTH_SECRET_KEY', 'your-top-secret-key');
define('JWT_AUTH_CORS_ENABLE', true);

Now you get endpoint for authentication
http://yourdomain.com/wp-json/jwt-auth/v1/token

Using axios

Promise based HTTP client for the browser and node.js

const loginData = {
            username: "Username",
            password: "Password"
        };
axios.post('http://yourdomain/wp-json/jwt-auth/v1/token', loginData)
    .then((res) => {
        console.log(res.data);
        localStorage.setItem('token', res.data.token);
        localStorage.setItem('user_nicename', res.data.user_nicename);
        localStorage.setItem('user_email', res.data.user_email);
        localStorage.setItem('user_display_name', res.data.user_display_name);
    })
    .catch((err) => {
        console.log(err);
    });

Crud Operation Endpoint for posts

Get All post (get all post you does not need any token)
http://yourdomain.com/wp-json/wp/v2/posts

axios.get('http://yourdomain/wp-json/wp/v2/posts')
    .then((res) => {
        console.log(res.data)   
    })
    .catch((err) => {
        console.log(err);
});

Create a post (You need an authentication token from login)
http://yourdomain.com/wp-json/wp/v2/posts

const formdata = {
    title: title,
    content: content,
    status: 'publish'
};

axios.post('http://yourdomain/wp-json/wp/v2/posts', formdata, {
    headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${localStorage.getItem('token')}`
                }
    })
    .then((res) => {
        console.log(res);           
    })
    .catch((err) => {
        console.log(err)
});

Edit Post (You need an authentication token from login)
http://yourdomain.com/wp-json/wp/v2/posts/id

const formdata = {
    title: title,
    content: content,
    status: 'publish'
};
axios.post('http://yourdomain/wp-json/wp/v2/posts/'+id, formdata, {
    headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${localStorage.getItem('token')}`
        }
    })
    .then((res) => {
        console.log(res);
    })
    .catch((err) => {
        console.log(res);
});

Delete Post (You need authentication token from login)
http://yourdomain.com/wp-json/wp/v2/posts/id

axios.delete('http://yourdomain/wp-json/wp/v2/posts/' + id, {
    headers: {
        'Content-Type': 'application/json',
        'Authorization': `Bearer ${localStorage.getItem('token')}`
        }
    })
    .then((res) => {
        console.log(res);
    })
    .catch((err) => {
        console.log(err);
});

For code here is the GitHub link
code

If there is any difficulty feel free to comment I will reply to you asap

Thanks for ready if this will helpful for you then comments and star my repo

Comments

[ivica-ha]

Hey,
I can't seem to go pass COARSE. Alwas the same error. Not sure what can I update.
I've set all the .htacces and config lines, but I always get:

Access to XMLHttpRequest at 'localhost:8080/wp-json/jwt-auth/v1...' from origin 'localhost:3000' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Any ideas? Maybe http?

Thanks for the help in advance.
Regards,

[MOHSIN ALI SOOMRO]

Thanks for comment here, can you send me screenshot of the exact error you get.
Here is the GitHub repo that may help you github.com/MohsinAliSoomro/wp-rest...

[Sung M. Kim]

Hi there Mohsin.

Would you format the code snippets?
You could check out the editor guide for documentation :)

[MOHSIN ALI SOOMRO]

Thank you Sung M. Kim for providing the documentation guidelines

[Sung M. Kim]

yw and thank you for taking time to making it better~

[Kemigisa Lailah Grant]

Thanks for the post, meanwhile, im tring to access your finished application but can't go beyond login