angular2
Version:
Angular 2 - a web framework for modern web apps
34 lines • 5.39 kB
JavaScript
import { PromiseWrapper } from 'angular2/src/facade/promise';
import { isPresent } from 'angular2/src/facade/lang';
import { XHR } from 'angular2/src/compiler/xhr';
export class XHRImpl extends XHR {
get(url) {
var completer = PromiseWrapper.completer();
var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);
xhr.responseType = 'text';
xhr.onload = function () {
// responseText is the old-school way of retrieving response (supported by IE8 & 9)
// response/responseType properties were introduced in XHR Level2 spec (supported by IE10)
var response = isPresent(xhr.response) ? xhr.response : xhr.responseText;
// normalize IE9 bug (http://bugs.jquery.com/ticket/1450)
var status = xhr.status === 1223 ? 204 : xhr.status;
// fix status code when it is 0 (0 status is undocumented).
// Occurs when accessing file resources or on Android 4.1 stock browser
// while retrieving files from application cache.
if (status === 0) {
status = response ? 200 : 0;
}
if (200 <= status && status <= 300) {
completer.resolve(response);
}
else {
completer.reject(`Failed to load ${url}`, null);
}
};
xhr.onerror = function () { completer.reject(`Failed to load ${url}`, null); };
xhr.send();
return completer.promise;
}
}
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