ajax: function()

in src/apache-unomi-tracker.js [687:750]
29 lines of code
9 McCabe index (conditional complexity)

        ajax: function (options) {
            var xhr = new XMLHttpRequest();
            if ('withCredentials' in xhr) {
                xhr.open(options.type, options.url, options.async);
                xhr.withCredentials = true;
            } else if (typeof XDomainRequest != 'undefined') {
                /* global XDomainRequest */
                xhr = new XDomainRequest();
                xhr.open(options.type, options.url);
            }

            if (options.contentType) {
                xhr.setRequestHeader('Content-Type', options.contentType);
            }
            if (options.dataType) {
                xhr.setRequestHeader('Accept', options.dataType);
            }

            if (options.responseType) {
                xhr.responseType = options.responseType;
            }

            var requestExecuted = false;
            if (wem.timeoutInMilliseconds !== -1) {
                setTimeout(function () {
                    if (!requestExecuted) {
                        console.error('[WEM] XML request timeout, url: ' + options.url);
                        requestExecuted = true;
                        if (options.error) {
                            options.error(xhr);
                        }
                    }
                }, wem.timeoutInMilliseconds);
            }

            xhr.onreadystatechange = function () {
                if (!requestExecuted) {
                    if (xhr.readyState === 4) {
                        if (xhr.status === 200 || xhr.status === 204 || xhr.status === 304) {
                            if (xhr.responseText != null) {
                                requestExecuted = true;
                                if (options.success) {
                                    options.success(xhr);
                                }
                            }
                        } else {
                            requestExecuted = true;
                            if (options.error) {
                                options.error(xhr);
                            }
                            console.error('[WEM] XML request error: ' + xhr.statusText + ' (' + xhr.status + ')');
                        }
                    }
                }
            };

            if (options.jsonData) {
                xhr.send(JSON.stringify(options.jsonData));
            } else if (options.data) {
                xhr.send(options.data);
            } else {
                xhr.send();
            }
        },