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After receiving the token from the backend, it should be saved in the browser's local storage for future authentication, as follows:

const authToken = response.headers.get('Authorization');
if (authToken) {
    localStorage.setItem('authToken', authToken);
}

Now, with every request, you will need to include the token in the header. You can do it as follows:

function fetchWithAuth(url, options = {}) {
    const authToken = localStorage.getItem('authToken'); 

    
    const headers = {
        ...options.headers,
        'Authorization': authToken ? authToken : '',
        'Content-Type': 'application/json', 
    };

    /
    return fetch(url, {
        ...options,
        headers,
    }…

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Answer selected by browniebroke
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Converted from issue

This discussion was converted from issue #9579 on July 06, 2025 14:47.