Method makeRequest

src/fly.js:120–303

(options)

            // make the http request
            function makeRequest(options) {
                data = options.body;
                // Normalize the request url
                url = utils.trim(options.url);
                let baseUrl = utils.trim(options.baseURL || "");
                if (!url && isBrowser && !baseUrl) url = location.href;
                if (url.indexOf("http") !== 0) {
                    let isAbsolute = url[0] === "/";
                    if (!baseUrl && isBrowser) {
                        let arr = location.pathname.split("/");
                        arr.pop();
                        baseUrl = location.protocol + "//" + location.host + (isAbsolute ? "" : arr.join("/"))
                    }
                    if (baseUrl[baseUrl.length - 1] !== "/") {
                        baseUrl += "/"
                    }
                    url = baseUrl + (isAbsolute ? url.substr(1) : url)
                    if (isBrowser) {

                        // Normalize the url which contains the ".." or ".", such as
                        // "http://xx.com/aa/bb/../../xx" to "http://xx.com/xx" .
                        let t = document.createElement("a");
                        t.href = url;
                        url = t.href;
                    }
                }

                let responseType = utils.trim(options.responseType || "")
                let needQuery = ["GET", "HEAD", "DELETE", "OPTION"].indexOf(options.method) !== -1;
                let dataType = utils.type(data);
                let params = options.params || {};

                // merge url params when the method is "GET" (data is object)
                if (needQuery && dataType === "object") {
                    params = utils.merge(data, params)
                }
                // encode params to String
                params = utils.formatParams(params);

                // save url params
                let _params = [];
                if (params) {
                    _params.push(params);
                }
                // Add data to url params when the method is "GET" (data is String)
                if (needQuery && data && dataType === "string") {
                    _params.push(data);
                }

                // make the final url
                if (_params.length > 0) {
                    url += (url.indexOf("?") === -1 ? "?" : "&") + _params.join("&");
                }

                engine.open(options.method, url);

                // try catch for ie >=9
                try {