53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
|
// a url (naming it a, because it will be reused to store callbacks)
|
||
|
|
// e timeout error placeholder to avoid using var, not to be used
|
||
|
|
// xhr placeholder to avoid using var, not to be used
|
||
|
|
function pegasus(a, e, xhr) {
|
||
|
|
xhr = new XMLHttpRequest();
|
||
|
|
|
||
|
|
// Set URL
|
||
|
|
xhr.open('GET', a);
|
||
|
|
|
||
|
|
// Don't need a to store URL anymore
|
||
|
|
// Reuse it to store callbacks
|
||
|
|
a = [];
|
||
|
|
|
||
|
|
pegasus.timeout && (xhr.timeout = pegasus.timeout);
|
||
|
|
|
||
|
|
xhr.ontimeout = function (event) {
|
||
|
|
e = event
|
||
|
|
}
|
||
|
|
|
||
|
|
xhr.onreadystatechange = xhr.then = function(onSuccess, onError, cb, data) {
|
||
|
|
// Test if onSuccess is a function
|
||
|
|
// Means that the user called xhr.then
|
||
|
|
if (onSuccess && onSuccess.call) {
|
||
|
|
a = [,onSuccess, onError];
|
||
|
|
}
|
||
|
|
|
||
|
|
// Test if there's a timeout error
|
||
|
|
e && a[2] && a[2](e, xhr)
|
||
|
|
|
||
|
|
// Test if request is complete
|
||
|
|
if (xhr.readyState == 4) {
|
||
|
|
// index will be:
|
||
|
|
// 0 if undefined
|
||
|
|
// 1 if status is between 200 and 399
|
||
|
|
// 2 if status is over
|
||
|
|
cb = a[0|xhr.status / 200];
|
||
|
|
if (cb) {
|
||
|
|
/*try {
|
||
|
|
data = JSON.parse(xhr.responseText) // NICKY FIX -- don't be helpful
|
||
|
|
} catch (e) {*/
|
||
|
|
data = null;
|
||
|
|
//}
|
||
|
|
cb(data, xhr);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Send the GET request
|
||
|
|
xhr.send();
|
||
|
|
|
||
|
|
// Return request
|
||
|
|
return xhr;
|
||
|
|
}
|