common.js 32 KB

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  1. var comm = {
  2. data: {
  3. baseUrl: ''
  4. },
  5. /* ====================================================================================== */
  6. addEvent: function (ele, ev, fn) { // 添加事件的函数
  7. //针对IE浏览器
  8. if (ele.attachEvent) {
  9. ele.attachEvent('on' + ev, fn)
  10. }
  11. //针对FF与chrome
  12. else {
  13. ele.addEventListener(ev, fn, false)
  14. }
  15. },
  16. ajax: function (options) { // 封装ajax
  17. var _this = this;
  18. //异步请求对象的完成状态
  19. this.done = 0;
  20. this.format = function () {
  21. var now = new String(new Date().getTime());
  22. return now.substr(0, now.length - 3);
  23. }
  24. //格式化参数
  25. this.formatParams = function (data) {
  26. //获取地址参数
  27. var arr = [];
  28. for (var name in data) {
  29. arr.push(encodeURIComponent(name) + "=" + encodeURIComponent(data[name]));
  30. }
  31. arr.push("t=" + _this.format());//按分钟刷一次
  32. return arr.join("&");
  33. }
  34. //传入设置
  35. options = options || {};
  36. //请求方式
  37. options.type = (options.type || "GET").toUpperCase();
  38. options.dataType = options.dataType || "json";
  39. options.async = options.async || true;
  40. options.contentType = options.contentType || 'application/x-www-form-urlencoded';
  41. var params = _this.formatParams(options.data);
  42. if (options.contentType == "application/json;charset=utf-8") {
  43. params = JSON.stringify(options.data)
  44. }
  45. //创建异步请求对象 - 第一步
  46. var xhr;
  47. //w3c标准
  48. if (window.XMLHttpRequest) {
  49. xhr = new XMLHttpRequest();
  50. }
  51. //兼容IE6及以下
  52. else if (window.ActiveObject) {
  53. xhr = new ActiveXObject('Microsoft.XMLHTTP');
  54. }
  55. //连接 和 发送 - 第二步
  56. //判断是那种类型的请求
  57. //若是get请求
  58. if (options.type == "GET") {
  59. //参数拼接
  60. if (options.url.indexOf("?") == -1) sp = "?"; else sp = "&";
  61. //发送请求
  62. xhr.open("GET", options.url + sp + params, options.async);
  63. xhr.send(null);
  64. }
  65. //若是post请求
  66. else if (options.type == "POST") {
  67. //发送请求
  68. xhr.open("POST", options.url, options.async);
  69. //设置表单提交时的内容类型
  70. xhr.setRequestHeader("Content-Type", options.contentType);
  71. //参数配置
  72. xhr.send(params);
  73. }
  74. //接收 - 第三步
  75. xhr.onreadystatechange = function () {
  76. if (xhr.readyState == 4) {
  77. //状态码
  78. var status = xhr.status;
  79. //状态码表示成功时,执行成功回调函数
  80. if (status >= 200 && status < 300 || status == 304) {
  81. //返回数据的格式
  82. //json字符串
  83. if (options.dataType == "json") {
  84. try {
  85. options.success && options.success(eval("(" + xhr.responseText + ")"));
  86. }
  87. catch (err) {
  88. options.success && options.success(JSON.parse(xhr.responseText), xhr.responseXML);
  89. }
  90. }
  91. //普通字符串
  92. else {
  93. options.success && options.success(xhr.responseText, xhr.responseXML);
  94. }
  95. // 改变状态为完成
  96. _this.done = 1;
  97. }
  98. //如果状态码表示失败时调用错误处理回调函数
  99. else {
  100. options.error && options.error(status);
  101. // 改变状态为完成
  102. _this.done = 1;
  103. }
  104. }
  105. }
  106. },
  107. /* ====================================================================================== */
  108. hasClass: function (ele, cls) { // 判断一个类是否存在
  109. return ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'))
  110. },
  111. addClass: function (ele, cls) { // 增加一个类
  112. if (!this.hasClass(ele, cls)) ele.className = ele.className.replace(/(\s*$)/g, "") + " " + cls
  113. },
  114. removeClass: function (ele, cls) { // 删除一个类
  115. if (this.hasClass(ele, cls)) {
  116. var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
  117. ele.className = ele.className.replace(reg, ' ')
  118. }
  119. },
  120. getStyle: function (ele, attr) { // 获取某个元素的样式
  121. var res = '';
  122. if (window.getComputedStyle) {
  123. res = getComputedStyle(ele)[attr];
  124. } else if (ele.currentStyle) {
  125. res = ele.currentStyle[attr];
  126. } else {
  127. res = ele.style[attr];
  128. }
  129. // 这里返回的样式做了调整,返回必须为字符串,有盒子的样式获取像margin-left会返回纯数字(不含单位px),这样不好处理,统一变成字符串后再对返回结果用正则匹配
  130. return res + '';
  131. },
  132. /* ====================================================================================== */
  133. show: function (ele) { // 让一个元素隐藏(display)
  134. ele.style.display = 'block'
  135. },
  136. hide: function (ele) { // 让一个元素显示(display)
  137. ele.style.display = 'none'
  138. },
  139. isShow: function (ele) { // 判断某个元素的是否显示(display,浅)
  140. var getVisibility = ele.style.display;
  141. return getVisibility !== "none";
  142. },
  143. isShowDeel: function (ele) { // 判断某个元素是否显示(display,深)
  144. temp = ele
  145. var getVisibility = this.getStyle(temp, 'display');
  146. if (getVisibility == 'none') {
  147. return false;
  148. } else if (temp.tagName == 'BODY') {
  149. return true;
  150. } else {
  151. return this.isShowDeel(temp.parentNode);
  152. }
  153. },
  154. visible: function (ele) { // 让一个元素隐藏(visible)
  155. ele.style.visibility = 'visible'
  156. },
  157. hidden: function (ele) { // 让一个元素显示(visible)
  158. ele.style.visibility = 'hidden'
  159. },
  160. /* ====================================================================================== */
  161. addElement: function (ele, tag, cls, data, inner, fn) { // 为一个元素创建一个子元素
  162. // 1、创建新元素
  163. var newEle = document.createElement(tag)
  164. // 2、设置各种属性(图片地址,自定义属性等)
  165. newEle.setAttribute('class', cls);
  166. for (var item in data) {
  167. newEle.setAttribute(item, data[item]);
  168. }
  169. // 3、设置内容(innerhtml)
  170. newEle.innerHTML = inner ? inner : ''
  171. // 4、设置回调函数
  172. fn && fn(newEle)
  173. // 5、将新元素加入到父元素中
  174. ele.appendChild(newEle)
  175. },
  176. /* ====================================================================================== */
  177. setCookie: function (name, value, t) { // 设置cookie
  178. var hour = t ? t : 8;
  179. var exp = new Date();
  180. exp.setTime(exp.getTime() + hour * 60 * 60 * 1000);
  181. document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString() + ";path=/";
  182. },
  183. getCookie: function (name) { // 获取cookie 存在返回值,不存在返回null
  184. var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
  185. if (arr = document.cookie.match(reg)) {
  186. if (arr[2] != "undefined")
  187. return unescape(arr[2]);
  188. else return undefined;
  189. } else {
  190. return null;
  191. }
  192. },
  193. getStack: function (stackName) { //获取历史栈
  194. var _this = this;
  195. var stack;
  196. if (_this.getQueryString('stack')) {
  197. stack = JSON.parse(_this.getQueryString('stack'));
  198. } else if (
  199. _this.getCookie(stackName) && JSON.parse(_this.getCookie(stackName))
  200. ) {
  201. stack = JSON.parse(_this.getCookie(stackName))
  202. }
  203. // 如果cookie上没有,就把上一页路径做为返回路径
  204. else {
  205. stack = [];
  206. }
  207. return stack;
  208. },
  209. pushStack: function (stackName, url) { // 添加历史栈
  210. var _this = this;
  211. var stack;
  212. stack = _this.getStack(stackName);
  213. stack.push(url);
  214. _this.setCookie('stackName', JSON.stringify(stack));
  215. _this.setCookie(stackName, JSON.stringify(stack));
  216. },
  217. popStack: function (stackName) { // 删除历史栈
  218. var _this = this;
  219. var stack;
  220. var delTop;
  221. stack = _this.getStack(stackName);
  222. delTop = stack.pop();
  223. _this.setCookie(stackName, JSON.stringify(stack));
  224. return delTop;
  225. },
  226. /* ====================================================================================== */
  227. getQueryString: function (name) { // 获取url的某个参数
  228. var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
  229. var r = window.location.search.substr(1).match(reg);
  230. if (r != null && unescape(r[2]) != "undefined" && unescape(r[2]) != "null") return unescape(r[2]);
  231. return '';
  232. },
  233. urlParam: function (obj) { // 将对象转换为url参数字符串
  234. var _this = this;
  235. var arr = [];
  236. for (var name in obj) {
  237. arr.push(encodeURIComponent(name) + "=" + encodeURIComponent(obj[name]));
  238. }
  239. return arr.join("&");
  240. },
  241. getRandom: function (min, max) { // 获取随机数
  242. return Math.floor(Math.random() * (max - min)) + min;
  243. },
  244. arrRandom: function (arr) { // 使数组随机排序,返回一个新数组
  245. // var newArr = []
  246. // var oldArrLength = arr.length
  247. // for(var i = 0; i < oldArrLength; i++) {
  248. // newArr.push(arr.splice(getRandom(0,arr.length),1)[0])
  249. // }
  250. // return newArr
  251. arr.sort(function () {
  252. return 0.5 - Math.random()
  253. })
  254. },
  255. createArr: function (arr, num, content) { // 生成数组,
  256. // 传入举例:var arr = [{num: 5, content: {id: 1, imgurl: 'img/1.jpg'}}, {num: 2, content: {id: 2, imgurl: 'img/2.jpg'}}]
  257. // 调用举例:comm.createArr(arr, 'num', 'content')
  258. var newArr = []
  259. for (var i = 0; i < arr.length; i++) {
  260. console.log(arr[i]);
  261. console.log(arr[i][num]);
  262. for (var j = 0; j < arr[i][num]; j++) {
  263. newArr.push(arr[i][content])
  264. }
  265. }
  266. return newArr
  267. },
  268. /* ====================================================================================== */
  269. isPhone: function (phone) { // 判断是否为有效手机号
  270. if (!(/^(13[0-9]|14[579]|15[0-3,5-9]|16[6]|17[0135678]|18[0-9]|19[89])\d{8}$/.test(phone))) {
  271. return false;
  272. } else {
  273. return true
  274. }
  275. },
  276. timestamp: function (time) { // 转换时间格式
  277. var sec = Math.floor(time % 60)
  278. var min = Math.floor(time / 60 % 60)
  279. var hour = Math.floor(time / 60 / 60)
  280. sec = sec < 10 ? '0' + sec : sec
  281. min = min < 10 ? '0' + min : min
  282. hour = hour < 10 ? '0' + hour : hour
  283. var timeStr = hour + ':' + min + ':' + sec;
  284. return timeStr
  285. },
  286. /* ====================================================================================== */
  287. Debuglog: function (text) { // 弹窗,用于测试
  288. if (typeof printWind == "undefined") {
  289. window.printWind = document.createElement("div");
  290. window.inner = document.createElement("div");
  291. inner.style.width = "600px";
  292. inner.style.position = "absolute";
  293. inner.style.right = "0px";
  294. printWind.appendChild(inner);
  295. printWind.style.position = "fixed";
  296. printWind.style.right = "0";
  297. printWind.style.top = "0";
  298. printWind.style.background = "rgba(0,0,0,0.6)";
  299. printWind.style.zIndex = "99999";
  300. printWind.style.padding = "20px";
  301. printWind.style.fontSize = "20px";
  302. printWind.style.width = "600px";
  303. printWind.style.height = "600px";
  304. printWind.style.color = "#0aff08";
  305. document.body.appendChild(printWind);
  306. }
  307. var para = document.createElement("p"); //创建新的<p> 元素
  308. para.innerHTML = text;
  309. para.setAttribute("class", "newLine");
  310. para.style.padding = "5px";
  311. inner.appendChild(para);
  312. var a = inner.clientHeight - 600;
  313. inner.style.top = -a + "px";
  314. },
  315. tips: function (text, time) {
  316. time = time ? time : 1500;
  317. var para = document.createElement("div"); //创建新的<p> 元素
  318. para.innerHTML = text;
  319. para.style.zIndex = 10000;
  320. para.style.borderRadius = '9px'
  321. para.style.backgroundColor = '#287AFF'
  322. para.style.textAlign = 'center'
  323. para.style.color = '#FFF'
  324. para.style.position = 'absolute'
  325. para.style.fontSize = '20px'
  326. para.style.left = '450px'
  327. para.style.top = '250px'
  328. para.style.padding = '7px 27px'
  329. para.style.width = '380px'
  330. para.style.wordBreak = 'break-all'
  331. para.style.display = 'block'
  332. document.body.appendChild(para);
  333. setTimeout(function () {
  334. document.body.removeChild(para);
  335. }, time);
  336. },
  337. /* ====================================================================================== */
  338. STBUtil: {
  339. /**
  340. * 通过键值获取机顶盒对应信息
  341. * @param name [参数名] ex:UserToken--用户token,EPGDomain--EPG域名,areaid--地区编码,templateName--当前用户模板
  342. * @return []
  343. */
  344. getSTBKey: function (name) {
  345. var value = '';
  346. if (typeof (Authentication) === "object") {
  347. if (Authentication.CTCGetConfig) {
  348. value = Authentication.CTCGetConfig(name);
  349. } else if (Authentication.CUGetConfig) {
  350. value = Authentication.CUGetConfig(name);
  351. }
  352. }
  353. return value;
  354. },
  355. /**
  356. * 通过键值设置机顶盒对应信息
  357. * @param name [参数名]
  358. * @param value [参数值]
  359. */
  360. setSTBKey: function (name, value) {
  361. if (typeof (Authentication) === "object") {
  362. Authentication.CTCSetConfig(name, value);
  363. }
  364. },
  365. /**
  366. * 获取机顶盒 用户账号/业务账号
  367. * @return {string}
  368. */
  369. getSTBUserId: function () {
  370. var userId = '';
  371. try{
  372. if (typeof (Authentication) == 'object') {
  373. // 此方法经测试目前可以获取到华为,中兴,创维三款机顶盒型号
  374. userId = Authentication.CTCGetConfig('UserID');
  375. if (!userId){
  376. userId = Authentication.CUGetConfig("UserID");
  377. }
  378. //烽火的机顶盒
  379. if(!userId){
  380. userId =Authentication.CTCGetConfig("device.userid");
  381. }
  382. //中兴老的盒子获取机顶盒型号的方法
  383. if(!userId && typeof(ztebw) == 'object' ){
  384. stbModel = ztebw.ioctlRead("infoZTEHWType");
  385. if(!stbModel) {
  386. stbModel = ztebw.ioctlRead("infoHWProduct");
  387. }
  388. }
  389. }
  390. else{
  391. console.log("不支持Authentication!");
  392. }
  393. }
  394. catch(e){
  395. userId = '';
  396. }
  397. return userId;
  398. },
  399. /**
  400. * 获取机顶盒 设备ID
  401. * @return {string}
  402. */
  403. getSTBId: function () {
  404. var stbId = "";
  405. if (typeof (Authentication) == "object") {
  406. stbId = Authentication.CTCGetConfig("STBID");
  407. if (!stbId) {
  408. stbId = Authentication.CUGetConfig("STBID");
  409. }
  410. if (!stbId) {
  411. stbId = Authentication.CTCGetConfig("device.stbid"); // 烽火的机顶盒
  412. }
  413. }
  414. // 广西广电获取stbId
  415. if (!stbId && typeof (guangxi) === "object") {
  416. stbId = guangxi.getStbNum();
  417. }
  418. return stbId;
  419. },
  420. /**
  421. * 获取机顶盒型号
  422. * @return {string}
  423. */
  424. getSTBModel: function () {
  425. var stbModel = '';
  426. try{
  427. //此方法经测试目前可以获取到华为,中兴,创维三款机顶盒型号
  428. stbModel = Authentication.CTCGetConfig('STBType');
  429. if (!stbModel){
  430. stbModel = Authentication.CUGetConfig("STBType");
  431. }
  432. //烽火的机顶盒
  433. if(!stbModel){
  434. stbModel = Authentication.CTCGetConfig("device.stbmodel");
  435. }
  436. //中兴老的盒子获取机顶盒型号的方法
  437. if(!stbModel && typeof(ztebw) == 'object' ){
  438. stbModel = ztebw.ioctlRead("infoZTEHWType");
  439. if(!stbModel){
  440. stbModel = ztebw.ioctlRead("infoHWProduct");
  441. }
  442. }
  443. }
  444. catch(e){
  445. console.log("不支持获取机顶盒型号!");
  446. }
  447. return stbModel;
  448. },
  449. /**
  450. * 获取机顶盒mac地址
  451. * @return {string}
  452. */
  453. getSTBMac: function () {
  454. if (window.isWinOS) { //Windows操作系统
  455. return "00-00-00-00-00-00";
  456. }
  457. var mac = "";
  458. if (typeof (Authentication) == "object") {
  459. try {
  460. mac = Authentication.CUGetConfig("mac");
  461. if (!mac && typeof (ztebw) == "object") {
  462. var stbId = ztebw.ioctlRead("infoHWSN");
  463. mac = stbId.substring(stbId.length - 12);
  464. }
  465. if (!mac) {
  466. mac = Authentication.CTCGetLocalMAC();
  467. }
  468. } catch (e) { }
  469. }
  470. // 广西广电获取mac
  471. if (!mac && typeof iPanel === "object") {
  472. mac = iPanel.getGlobalVar("MAC_ETH0");
  473. }
  474. // 长虹机顶盒获取mac(四川广电)
  475. if (!mac && typeof (Ethernet) === "object") {
  476. mac = Ethernet.MACAddress;
  477. }
  478. if (mac) {
  479. while (mac.indexOf(":") !== -1) {
  480. mac = mac.replace(":", "");
  481. }
  482. } else {
  483. mac = "00-00-00-00-00-00";
  484. }
  485. return mac;
  486. },
  487. /**
  488. * 获取 EPG大厅地址
  489. * @return {string}
  490. */
  491. getEPGDomain: function () {
  492. var epgDomain = "";
  493. if (typeof (Authentication) == "object") {
  494. epgDomain = Authentication.CTCGetConfig("EPGDomain");
  495. if (!epgDomain) {
  496. epgDomain = Authentication.CUGetConfig("EPGDomain");
  497. }
  498. if (typeof epgDomain === "undefined" || epgDomain == null) {
  499. epgDomain = "";
  500. }
  501. }
  502. return epgDomain;
  503. },
  504. /**
  505. * 获取 UserToken
  506. * @return {string}
  507. */
  508. getUserToken: function () {
  509. var userToken = "";
  510. if (typeof (Authentication) == "object") {
  511. userToken = Authentication.CTCGetConfig("UserToken");
  512. if (!userToken) {
  513. userToken = Authentication.CUGetConfig("UserToken");
  514. }
  515. if (!userToken) {
  516. userToken = Authentication.CTCGetConfig("device.usertoken");
  517. }
  518. }
  519. return userToken;
  520. },
  521. }
  522. };
  523. // promise插件
  524. (function (window) {
  525. // 参考Joe-Xie:https://www.cnblogs.com/XieJunBao/p/9156134.html
  526. // 原生封装promise为了应对低版本浏览器不兼容问题
  527. // 异步串行思路:promise执行then是注册回调函数,then有多个就可以注册多个回调函数,但是若多个回调都是异步执行的,那我们要等上一个异步结束后才执行下一个异步,这是时候就需要上一个异步操作完成后,把这个完成状态告诉下一个回调,这样才可以异步串行。为了解决这个问题我们把异步完成状态托管给promise去管理
  528. // 流程:第一步注册:链式调用then函数,每执行一个then函数,返回一个桥梁promise(then函数中的成功回调和失败回调是写入这个promise的回调列表中的,注意成功回调的功能除了执行本身函数外还要更新下一个promise的状态)
  529. // 第二步执行:第一个promise的异步执行完,开始执行第一个promise的回调函数(回调函数又分两步走:第一步:resolvePromise解析回调返回值(如果是promise则说明是异步,就需要继续解析直到不是promise而是一个具体的值),第二步:当回调返回的值是一个具体值而不是promise时,调用第二个proomise的reslove方法将第二个proomise的状态更新为fulfilled,并将第一个promise的回调的值传入p2的回调函数中去执行)
  530. function MyPromise(fn) {
  531. var self = this;
  532. // 成功回调传的参数
  533. self.value = null;
  534. // 失败回调传的参数
  535. self.error = null;
  536. // 当前promise对象的状态
  537. self.status = "pending";
  538. // 存储成功回调列表
  539. self.onFulfilledCallbacks = [];
  540. // 存储失败回调列表
  541. self.onRejectedCallbacks = [];
  542. // 状态改变并执行回调
  543. // 成功
  544. function resolve(value) {
  545. // 判断传入参数是否由MyPromise构造的对象,若是,注册该函数
  546. if (value instanceof MyPromise) {
  547. return value.then(resolve, reject);
  548. }
  549. // 判断
  550. if (self.status === "pending") {
  551. setTimeout(function () {
  552. self.status = "fulfilled";
  553. self.value = value;
  554. // 执行成功回调
  555. // self.onFulfilledCallbacks.forEach(function(callback){callback(self.value)});
  556. // 向下兼容forEach
  557. for (var i = 0; i < self.onFulfilledCallbacks.length; i++) {
  558. self.onFulfilledCallbacks[i](self.value);
  559. }
  560. }, 0)
  561. }
  562. }
  563. // 失败
  564. function reject(error) {
  565. if (self.status === "pending") {
  566. setTimeout(function () {
  567. self.status = "rejected";
  568. self.error = error;
  569. // self.onRejectedCallbacks.forEach(function(callback){callback(self.error)});
  570. for (var i = 0; i < self.onRejectedCallbacks.length; i++) {
  571. self.onRejectedCallbacks[i](self.error);
  572. }
  573. }, 0)
  574. }
  575. }
  576. try {
  577. fn(resolve, reject);
  578. }
  579. catch (e) {
  580. reject(e);
  581. }
  582. }
  583. // 解析放回值
  584. // 用来解析回调函数的返回值x,x可能是普通值也可能是个promise对象
  585. // 因为回调函数既可能会返回一个异步的promise也可能会返回一个同步结果,所以我们把直接把回调函数的结果托管给bridgePromise,使用resolvePromise方法来解析回调函数的结果,如果回调函数返回一个promise并且状态还是pending,就在这个promise的then方法中继续解析这个promise reslove传过来的值,如果值还是pending状态的promise就继续解析,直到不是一个异步promise,而是一个正常值就使用bridgePromise的reslove方法将bridgePromise的状态改为fulfilled,并调用onFulfilledCallbacks回调数组中的方法,将该值传入,到此异步操作就衔接上了。
  586. function resolvePromise(bridgepromise, x, resolve, reject) {
  587. // bridgepromise是桥梁promise,x是桥梁promise中注册的成功回调的返回值,resolve和reject是桥梁promise的状态改变函数
  588. // 2.3.1规范,避免循环引用
  589. // 如果成功回调的值又是桥梁promise就返回循环传参的错误(死循环)
  590. if (bridgepromise === x) {
  591. return reject(new TypeError('Circular reference'));
  592. }
  593. var called = false;
  594. // // 如果x是一个promise,则通过递归
  595. // if (x instanceof MyPromise) {
  596. // //如果这个promise是pending状态,就在它的then方法里继续执行resolvePromise解析它的结果,直到返回值不是一个pending状态的promise为止(这里使用了递归的方法)
  597. // if (x.status === "pending") {
  598. // x.then(
  599. // function(y){
  600. // resolvePromise(bridgepromise, y, resolve, reject);
  601. // },
  602. // function(error){
  603. // reject(error);
  604. // }
  605. // );
  606. // }
  607. // else {
  608. // x.then(resolve, reject);
  609. // }
  610. // }
  611. // else
  612. // // 如果x是一个promise,则继续解析它的状态
  613. if (x != null && ((typeof x === 'object') || (typeof x === 'function'))) {
  614. try {
  615. var then = x.then;
  616. if (typeof then === 'function') {
  617. // then方法的指向传入的桥梁promise,也就是说该桥梁promise调用了then方法并传入了成功回调和失败回调
  618. then.call(
  619. x,
  620. // 传入then的成功回调
  621. function (y) {
  622. if (called) return;
  623. called = true;
  624. // 这里重新解析当前的桥梁promise,至于成功回调的返回值传空(这里目的是通过递归持续判断当前桥梁promise的状态)
  625. resolvePromise(bridgepromise, y, resolve, reject);
  626. },
  627. //传入then的失败回调
  628. function (error) {
  629. if (called) return;
  630. called = true;
  631. reject(error);
  632. }
  633. )
  634. }
  635. // 如果then不是一个函数,则以x为值改变promise状态并延长成功回调列表
  636. else {
  637. resolve(x);
  638. }
  639. }
  640. // 如果在取x.then值时抛出了异常,则以这个异常做为原因将promise拒绝。
  641. catch (e) {
  642. if (called) return;
  643. called = true;
  644. reject(e);
  645. }
  646. }
  647. // 如过x不是一个promise,则改变bridgePromise的状态改为fulfilled,并调用onFulfilledCallbacks回调数组中的方法,将该值传入
  648. else {
  649. resolve(x);
  650. }
  651. }
  652. // 注册回调函数
  653. MyPromise.prototype.then = function (onFulfilled, onRejected) {
  654. var self = this;
  655. // 搭建桥梁promise(即调用为then方法后重新返回一个新的promise对象)
  656. var bridgePromise;
  657. // 防止使用者不传成功或失败回调函数,所以成功失败回调都给了默认回调函数
  658. onFulfilled = typeof onFulfilled === "function" ? onFulfilled : function (value) { return value };
  659. onRejected = typeof onRejected === "function" ? onRejected : function (error) { throw error };
  660. // 如果当前的promise对象是完成状态
  661. // 返回一个新的桥梁promise
  662. if (self.status === "fulfilled") {
  663. return bridgePromise = new MyPromise(function (resolve, reject) {
  664. setTimeout(function () {
  665. try {
  666. // 获取成功回调函数的返回值
  667. var x = onFulfilled(self.value);
  668. // 解析桥梁promise函数
  669. resolvePromise(bridgePromise, x, resolve, reject);
  670. }
  671. catch (e) {
  672. reject(e);
  673. }
  674. }, 0);
  675. })
  676. }
  677. // 如果当前的promise对象是拒绝状态
  678. if (self.status === "rejected") {
  679. return bridgePromise = new MyPromise(function (resolve, reject) {
  680. setTimeout(function () {
  681. try {
  682. var x = onRejected(self.error);
  683. resolvePromise(bridgePromise, x, resolve, reject);
  684. }
  685. catch (e) {
  686. reject(e);
  687. }
  688. }, 0);
  689. });
  690. }
  691. // 如果当前的promise对象是听候状态,则在当前promise对象的成功回调列表和失败回调列表中注入
  692. if (self.status === "pending") {
  693. return bridgePromise = new MyPromise(function (resolve, reject) {
  694. // 注意回调列表是把整个回调函数和回调解析函数一起注入的!!!!!,所以在执行回调时除运行回调函数还要,解析桥梁promise的状态(有可能桥梁promise中也有promise),解析中改变当前promise的状态,若当前promise的状态为完成状态才继续执行下一个注册好的回调
  695. self.onFulfilledCallbacks.push(function (value) {
  696. try {
  697. var x = onFulfilled(value);
  698. resolvePromise(bridgePromise, x, resolve, reject);
  699. }
  700. catch (e) {
  701. reject(e);
  702. }
  703. });
  704. self.onRejectedCallbacks.push(function (error) {
  705. try {
  706. var x = onRejected(error);
  707. resolvePromise(bridgePromise, x, resolve, reject);
  708. }
  709. catch (e) {
  710. reject(e);
  711. }
  712. });
  713. });
  714. }
  715. }
  716. MyPromise.prototype.MyCatch = function (onRejected) {
  717. return this.then(null, onRejected);
  718. }
  719. MyPromise.all = function (promises) {
  720. return new MyPromise(function (resolve, reject) {
  721. var result = [];
  722. var count = 0;
  723. for (var i = 0; i < promises.length; i++) {
  724. // (function(i){
  725. // return promises[i].then(function(data) {
  726. // result[i] = data;
  727. // if (++count == promises.length) {
  728. // resolve(result);
  729. // }
  730. // }, function(error) {
  731. // reject(error);
  732. // });
  733. // })(i)
  734. function closeTemp(i) {
  735. return promises[i].then(function (data) {
  736. result[i] = data;
  737. if (++count == promises.length) {
  738. resolve(result);
  739. }
  740. }, function (error) {
  741. reject(error);
  742. });
  743. }
  744. closeTemp(i)
  745. }
  746. });
  747. }
  748. MyPromise.race = function (promises) {
  749. return new MyPromise(function (resolve, reject) {
  750. for (var i = 0; i < promises.length; i++) {
  751. promises[i].then(function (data) {
  752. resolve(data);
  753. }, function (error) {
  754. reject(error);
  755. });
  756. }
  757. });
  758. }
  759. MyPromise.resolve = function (value) {
  760. return new MyPromise(function (resolve) {
  761. resolve(value);
  762. });
  763. }
  764. MyPromise.reject = function (error) {
  765. return new MyPromise(function (resolve, reject) {
  766. reject(error);
  767. });
  768. }
  769. MyPromise.promisify = function (fn) {
  770. return function () {
  771. var args = Array.from(arguments);
  772. return new MyPromise(function (resolve, reject) {
  773. fn.apply(null, args.concat(function (err) {
  774. err ? reject(err) : resolve(arguments[1])
  775. }));
  776. })
  777. }
  778. }
  779. window.MyPromise = MyPromise;
  780. })(window);