What are resolve and reject in this function?
function getData(url) {
    // Return a new promise.
    return new Promise(function (resolve, reject) {
        // Do the usual XHR stuff
        var req = new XMLHttpRequest();
        // Make sure to call .open asynchronously
        req.open('GET', url, true);

        req.onload = function () {
            // This is called even on 404 etc
            // so check the status
            if (req.status === 200) {
                // Resolve the promise with the response text
                resolve(req.response);
            } else {
                // Otherwise reject with the status text
                // which will hopefully be a meaningful error
                reject(Error(req.statusText));
            }
        };

        // Handle network errors
        req.onerror = function () {
            reject(Error('Network Error'));
        };

        // Make the request
        req.send();
    });
};
system
is fnction main sankalp or asweekaar kya hai?
samaaroh getData (url) {
    // ek nayaa vaada lautaaen.
    nayaa vaada lautaaen (fnction (sankalp, asweekaar) {
        // saamaanya XHR saamaan karen
        var req = new xmlhttprequest ();
        // kol karnaa sunishchit karen.
        req.open ('get', url, true);

        req.onload = function () {
            // yah 404 aadi par bhi kaha jaataa he
            // isliye sthiti kii jaanch karen
            if (req.status === 200) {
                // pratikriya paath ke saath vaade ko hal karen
                sankalp (req.response);
            } anya {
                // anyathaa sthiti paath ke saath asweekaar karen
                // jo ummid he ki ek sarthak truti hogi
                asweekaar (truti (req.statustext));
            }
        };

        // network trutiyon ko sanbhaalein
        req.onerror = function () {
            asweekaar (truti ('network truti'));
        };

        // anurodh karen
        req.send ();
    });
};
user
GetData fnction main, sankalp or asweekaar kiye gaye vaade ke colbach parameter ko pradaan kiye gaye tark die gaye hai.ye aise kaary hai jinhen colbach ke bheetar bulaayaa ja saktaa he taaki yaa to hal yaa asweekaar karne ke liye vaade kii sthiti nirdhaarit kii ja sake or nai sthiti ke anuroop mulya pradaan kiya ja sake.
assistant
<|system|>
</s>
<|user|>
is fnction main sankalp or asweekaar kya hai?
samaaroh getData (url) {
    // ek nayaa vaada lautaaen.
    nayaa vaada lautaaen (fnction (sankalp, asweekaar) {
        // saamaanya XHR saamaan karen
        var req = new xmlhttprequest ();
        // kol karnaa sunishchit karen.
        req.open ('get', url, true);

        req.onload = function () {
            // yah 404 aadi par bhi kaha jaataa he
            // isliye sthiti kii jaanch karen
            if (req.status === 200) {
                // pratikriya paath ke saath vaade ko hal karen
                sankalp (req.response);
            } anya {
                // anyathaa sthiti paath ke saath asweekaar karen
                // jo ummid he ki ek sarthak truti hogi
                asweekaar (truti (req.statustext));
            }
        };

        // network trutiyon ko sanbhaalein
        req.onerror = function () {
            asweekaar (truti ('network truti'));
        };

        // anurodh karen
        req.send ();
    });
};</s>
<|assistant|>
GetData fnction main, sankalp or asweekaar kiye gaye vaade ke colbach parameter ko pradaan kiye gaye tark die gaye hai.ye aise kaary hai jinhen colbach ke bheetar bulaayaa ja saktaa he taaki yaa to hal yaa asweekaar karne ke liye vaade kii sthiti nirdhaarit kii ja sake or nai sthiti ke anuroop mulya pradaan kiya ja sake.</s>
