Fetch ejemplos

   fetch('https://jsonplaceholder.typicode.com/users')
            .then(response => response.json()) // Cuando acabes lo que te he pedido ejecuta esto
            .then(json => console.log(json)) // Cuando acabes de convertirlo entra aquí
            .catch();



        let usuario = ` {
    "id": 1,
    "name": "Ana Pi",
    "username": "Bret",
    "email": "Sincere@april.biz",
    "address": {
      "street": "Kulas Light",
      "suite": "Apt. 556",
      "city": "Gwenborough",
      "zipcode": "92998-3874",
      "geo": {
        "lat": "-37.3159",
        "lng": "81.1496"
      }
    },
    "phone": "1-770-736-8031 x56442",
    "website": "hildegard.org",
    "company": {
      "name": "Romaguera-Crona",
      "catchPhrase": "Multi-layered client-server neural-net",
      "bs": "harness real-time e-markets"
    }
  }`;

        fetch('https://jsonplaceholder.typicode.com/users', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json;charset=utf-8'
            },
            body: usuario
        })
            .then(response => response.json()) // Cuando acabes lo que te he pedido ejecuta esto
            .then(json => console.log(json)) // Cuando acabes de convertirlo entra aquí
            .catch();
        console.log("fetch1");
        let response = await fetch('https://jsonplaceholder.typicode.com/users');
        if (response.ok) {
            let datos = await response.text();
            console.log(datos);
        } else {
            console.log(response.status);
        }
        console.log("fetch2");