get data from server javascript code example

Example 1: react post request

componentDidMount() {
    // Simple POST request with a JSON body using fetch
    const requestOptions = {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ title: 'React POST Request Example' })
    };
    fetch('https://jsonplaceholder.typicode.com/posts', requestOptions)
        .then(response => response.json())
        .then(data => this.setState({ postId: data.id }));
}

Example 2: work with fetches in js

function yourfunction() {
    return fetch(API) 
        .then(response => response.json())
        .then(data => data.content)
}