util-helpers/lib/ajax.js

一个基于业务场景的工具方法库

'use strict';

var native = require('./utils/native.js');

function ajax(url, options) {
    var _a = options || {}, _b = _a.method, method = _b === void 0 ? 'get' : _b, _c = _a.data, data = _c === void 0 ? null : _c, timeout = _a.timeout, headers = _a.headers, _d = _a.withCredentials, withCredentials = _d === void 0 ? false : _d, _e = _a.async, async = _e === void 0 ? true : _e, _f = _a.user, user = _f === void 0 ? null : _f, _g = _a.password, password = _g === void 0 ? null : _g, responseType = _a.responseType, onReadyStateChange = _a.onReadyStateChange, onLoadStart = _a.onLoadStart, onProgress = _a.onProgress, onAbort = _a.onAbort, onTimeout = _a.onTimeout, onError = _a.onError, onLoad = _a.onLoad, onLoadEnd = _a.onLoadEnd;
    return new Promise(function (resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open(method.toLowerCase(), url, async, user, password);
        if (onReadyStateChange) {
            xhr.onreadystatechange = onReadyStateChange;
        }
        if (typeof timeout === 'number' && timeout > 0) {
            xhr.timeout = timeout;
        }
        xhr.withCredentials = withCredentials;
        if (responseType) {
            xhr.responseType = responseType;
        }
        if (typeof headers === 'object') {
            native.objectKeys(headers).map(function (item) {
                xhr.setRequestHeader(item, headers[item]);
            });
        }
        var wrapSuccess = function (cb) {
            return function (e) {
                resolve(e);
                cb === null || cb === void 0 ? void 0 : cb.call(xhr, e);
            };
        };
        var wrapError = function (cb) {
            return function (e) {
                reject(e);
                cb === null || cb === void 0 ? void 0 : cb.call(xhr, e);
            };
        };
        var events = {
            loadstart: onLoadStart,
            progress: onProgress,
            abort: wrapError(onAbort),
            timeout: wrapError(onTimeout),
            error: wrapError(onError),
            load: wrapSuccess(onLoad),
            loadend: onLoadEnd
        };
        var eventKeys = native.objectKeys(events);
        eventKeys.forEach(function (item) {
            var func = events[item];
            if (func) {
                xhr.addEventListener(item, func);
            }
        });
        xhr.send(data);
    });
}

module.exports = ajax;