function ajax()

in source/console/app/lib/aws-ui/AWS-UI-Components/components.js [1950:2019]
32 lines of code
17 McCabe index (conditional complexity)

	function ajax(options) {
		if (options.dataType && options.dataType.toLowerCase() === "jsonp") {
			var callbackKey = "mithril_callback_" + new Date().getTime() + "_" + (Math.round(Math.random() * 1e16)).toString(36);
			var script = $document.createElement("script");

			window[callbackKey] = function(resp) {
				script.parentNode.removeChild(script);
				options.onload({
					type: "load",
					target: {
						responseText: resp
					}
				});
				window[callbackKey] = undefined
			};

			script.onerror = function(e) {
				script.parentNode.removeChild(script);

				options.onerror({
					type: "error",
					target: {
						status: 500,
						responseText: JSON.stringify({error: "Error making jsonp request"})
					}
				});
				window[callbackKey] = undefined;

				return false
			};

			script.onload = function(e) {
				return false
			};

			script.src = options.url
				+ (options.url.indexOf("?") > 0 ? "&" : "?")
				+ (options.callbackKey ? options.callbackKey : "callback")
				+ "=" + callbackKey
				+ "&" + buildQueryString(options.data || {});
			$document.body.appendChild(script)
		}
		else {
			var xhr = new window.XMLHttpRequest;
			xhr.open(options.method, options.url, true, options.user, options.password);
			xhr.onreadystatechange = function() {
				if (xhr.readyState === 4) {
					if (xhr.status >= 200 && xhr.status < 300) options.onload({type: "load", target: xhr});
					else options.onerror({type: "error", target: xhr})
				}
			};
			if (options.serialize === JSON.stringify && options.data && options.method !== "GET") {
				xhr.setRequestHeader("Content-Type", "application/json; charset=utf-8")
			}
			if (options.deserialize === JSON.parse) {
				xhr.setRequestHeader("Accept", "application/json, text/*");
			}
			if (typeof options.config === FUNCTION) {
				var maybeXhr = options.config(xhr, options);
				if (maybeXhr != null) xhr = maybeXhr
			}

			var data = options.method === "GET" || !options.data ? "" : options.data
			if (data && (type.call(data) != STRING && data.constructor != window.FormData)) {
				throw "Request data should be either be a string or FormData. Check the `serialize` option in `m.request`";
			}
			xhr.send(data);
			return xhr
		}
	}