const url = "https://jsonplaceholder.typicode.com/posts";

async function fetchAPI() {
    try{
        let result = await fetch(url, 
            {
                method: 'PUT',
                headers: {
                    'Content-Type': 'application/json'
                },

                body: JSON.stringify(
                    {
                        name: "Szabó Márton",
                        email: "@mail"
                    }
                )
            }
        );
        let data = await result.json();
        console.log(data);
    } catch (error){
        console.error(error);
    } finally {
        console.log("All done.")
    }
}

async function ajax() {
    let xhr = new XMLHttpRequest();
    xhr.open("GET", url, true);

    xhr.onreadystatechange = async function(){
        if  (xhr.readyState === 4){
            if  (xhr.status === 200){
                console.log("asd");
                let sol = await JSON.parse(xhr.responseText);
                //let sol = await JSON.parse(JSON.stringify(xhttp.responseText));
                sol.forEach(element => {
                    if (element.id > 0 && element.id < 4){
                        console.log(element);
                    }
                });
            } else if(xhr.status == 400){
                console.error("Az erőforrás nem található");
            } else {
                console.error(`Hiba kód: ${xhr.status}`);
            }
        }
    }
    xhr.send();
}

//fetchAPI();
ajax();