/** * oclazyload - Load modules on demand (lazy load) with angularJS * @version v0.5.0 * @link https://github.com/ocombe/ocLazyLoad * @license MIT * @author Olivier Combe */ (function() { 'use strict'; var regModules = ['ng'], regInvokes = {}, regConfigs = [], justLoaded = [], runBlocks = {}, ocLazyLoad = angular.module('oc.lazyLoad', ['ng']), broadcast = angular.noop; ocLazyLoad.provider('$ocLazyLoad', ['$controllerProvider', '$provide', '$compileProvider', '$filterProvider', '$injector', '$animateProvider', function($controllerProvider, $provide, $compileProvider, $filterProvider, $injector, $animateProvider) { var modules = {}, providers = { $controllerProvider: $controllerProvider, $compileProvider: $compileProvider, $filterProvider: $filterProvider, $provide: $provide, // other things $injector: $injector, $animateProvider: $animateProvider }, anchor = document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0], jsLoader, cssLoader, templatesLoader, debug = false, events = false; // Let's get the list of loaded modules & components init(angular.element(window.document)); this.$get = ['$timeout', '$log', '$q', '$templateCache', '$http', '$rootElement', '$rootScope', '$cacheFactory', '$interval', function($timeout, $log, $q, $templateCache, $http, $rootElement, $rootScope, $cacheFactory, $interval) { var instanceInjector, filesCache = $cacheFactory('ocLazyLoad'), uaCssChecked = false, useCssLoadPatch = false; if(!debug) { $log = {}; $log['error'] = angular.noop; $log['warn'] = angular.noop; $log['info'] = angular.noop; } // Make this lazy because at the moment that $get() is called the instance injector hasn't been assigned to the rootElement yet providers.getInstanceInjector = function() { return (instanceInjector) ? instanceInjector : (instanceInjector = $rootElement.data('$injector')); }; broadcast = function broadcast(eventName, params) { if(events) { $rootScope.$broadcast(eventName, params); } if(debug) { $log.info(eventName, params); } } /** * Load a js/css file * @param type * @param path * @returns promise */ var buildElement = function buildElement(type, path, params) { var deferred = $q.defer(), el, loaded, cacheBuster = function cacheBuster(url) { var dc = new Date().getTime(); if(url.indexOf('?') >= 0) { if(url.substring(0, url.length - 1) === '&') { return url + '_dc=' + dc; } return url + '&_dc=' + dc; } else { return url + '?_dc=' + dc; } }; // Store the promise early so the file load can be detected by other parallel lazy loads // (ie: multiple routes on one page) a 'true' value isn't sufficient // as it causes false positive load results. if(angular.isUndefined(filesCache.get(path))) { filesCache.put(path, deferred.promise); } // Switch in case more content types are added later switch(type) { case 'css': el = document.createElement('link'); el.type = 'text/css'; el.rel = 'stylesheet'; el.href = params.cache === false ? cacheBuster(path) : path; break; case 'js': el = document.createElement('script'); el.src = params.cache === false ? cacheBuster(path) : path; break; default: deferred.reject(new Error('Requested type "' + type + '" is not known. Could not inject "' + path + '"')); break; } el.onload = el['onreadystatechange'] = function(e) { if((el['readyState'] && !(/^c|loade/.test(el['readyState']))) || loaded) return; el.onload = el['onreadystatechange'] = null loaded = 1; broadcast('ocLazyLoad.fileLoaded', path); deferred.resolve(); } el.onerror = function(e) { deferred.reject(new Error('Unable to load ' + path)); } el.async = 1; var insertBeforeElem = anchor.lastChild; if(params.insertBefore) { var element = angular.element(params.insertBefore); if(element && element.length > 0) { insertBeforeElem = element[0]; } } anchor.insertBefore(el, insertBeforeElem); /* The event load or readystatechange doesn't fire in: - iOS < 6 (default mobile browser) - Android < 4.4 (default mobile browser) - Safari < 6 (desktop browser) */ if(type == 'css') { if(!uaCssChecked) { var ua = navigator.userAgent.toLowerCase(); // iOS < 6 if(/iP(hone|od|ad)/.test(navigator.platform)) { var v = (navigator.appVersion).match(/OS (\d+)_(\d+)_?(\d+)?/); var iOSVersion = parseFloat([parseInt(v[1], 10), parseInt(v[2], 10), parseInt(v[3] || 0, 10)].join('.')); useCssLoadPatch = iOSVersion < 6; } else if(ua.indexOf("android") > -1) { // Android < 4.4 var androidVersion = parseFloat(ua.slice(ua.indexOf("android") + 8)); useCssLoadPatch = androidVersion < 4.4; } else if(ua.indexOf('safari') > -1 && ua.indexOf('chrome') == -1) { var safariVersion = parseFloat(ua.match(/version\/([\.\d]+)/i)[1]); useCssLoadPatch = safariVersion < 6; } } if(useCssLoadPatch) { var tries = 1000; // * 20 = 20000 miliseconds var interval = $interval(function() { try { el.sheet.cssRules; $interval.cancel(interval); el.onload(); } catch(e) { if(--tries <= 0) { el.onerror(); } } }, 20); } } return deferred.promise; } if(angular.isUndefined(jsLoader)) { /** * jsLoader function * @type Function * @param paths array list of js files to load * @param callback to call when everything is loaded. We use a callback and not a promise * @param params object config parameters * because the user can overwrite jsLoader and it will probably not use promises :( */ jsLoader = function(paths, callback, params) { var promises = []; angular.forEach(paths, function loading(path) { promises.push(buildElement('js', path, params)); }); $q.all(promises).then(function success() { callback(); }, function error(err) { callback(err); }); } jsLoader.ocLazyLoadLoader = true; } if(angular.isUndefined(cssLoader)) { /** * cssLoader function * @type Function * @param paths array list of css files to load * @param callback to call when everything is loaded. We use a callback and not a promise * @param params object config parameters * because the user can overwrite cssLoader and it will probably not use promises :( */ cssLoader = function(paths, callback, params) { var promises = []; angular.forEach(paths, function loading(path) { promises.push(buildElement('css', path, params)); }); $q.all(promises).then(function success() { callback(); }, function error(err) { callback(err); }); } cssLoader.ocLazyLoadLoader = true; } if(angular.isUndefined(templatesLoader)) { /** * templatesLoader function * @type Function * @param paths array list of css files to load * @param callback to call when everything is loaded. We use a callback and not a promise * @param params object config parameters for $http * because the user can overwrite templatesLoader and it will probably not use promises :( */ templatesLoader = function(paths, callback, params) { if(angular.isString(paths)) { paths = [paths]; } var promises = []; angular.forEach(paths, function(url) { var deferred = $q.defer(); promises.push(deferred.promise); $http.get(url, params).success(function(data) { angular.forEach(angular.element(data), function(node) { if(node.nodeName === 'SCRIPT' && node.type === 'text/ng-template') { $templateCache.put(node.id, node.innerHTML); } }); if(angular.isUndefined(filesCache.get(url))) { filesCache.put(url, true); } deferred.resolve(); }).error(function(data) { var err = 'Error load template "' + url + '": ' + data; $log.error(err); deferred.reject(new Error(err)); }); }); return $q.all(promises).then(function success() { callback(); }, function error(err) { callback(err); }); } templatesLoader.ocLazyLoadLoader = true; } var filesLoader = function(config, params) { var cssFiles = [], templatesFiles = [], jsFiles = [], promises = [], cachePromise = null; angular.extend(params || {}, config); var pushFile = function(path) { cachePromise = filesCache.get(path); if(angular.isUndefined(cachePromise) || params.cache === false) { if(/\.css[^\.]*$/.test(path) && cssFiles.indexOf(path) === -1) { cssFiles.push(path); } else if(/\.(htm|html)[^\.]*$/.test(path) && templatesFiles.indexOf(path) === -1) { templatesFiles.push(path); } else if(jsFiles.indexOf(path) === -1) { jsFiles.push(path); } } else if(cachePromise) { promises.push(cachePromise); } } if(params.serie) { pushFile(params.files.shift()); } else { angular.forEach(params.files, function(path) { pushFile(path); }); } if(cssFiles.length > 0) { var cssDeferred = $q.defer(); cssLoader(cssFiles, function(err) { if(angular.isDefined(err) && cssLoader.hasOwnProperty('ocLazyLoadLoader')) { $log.error(err); cssDeferred.reject(err); } else { cssDeferred.resolve(); } }, params); promises.push(cssDeferred.promise); } if(templatesFiles.length > 0) { var templatesDeferred = $q.defer(); templatesLoader(templatesFiles, function(err) { if(angular.isDefined(err) && templatesLoader.hasOwnProperty('ocLazyLoadLoader')) { $log.error(err); templatesDeferred.reject(err); } else { templatesDeferred.resolve(); } }, params); promises.push(templatesDeferred.promise); } if(jsFiles.length > 0) { var jsDeferred = $q.defer(); jsLoader(jsFiles, function(err) { if(angular.isDefined(err) && jsLoader.hasOwnProperty('ocLazyLoadLoader')) { $log.error(err); jsDeferred.reject(err); } else { jsDeferred.resolve(); } }, params); promises.push(jsDeferred.promise); } if(params.serie && params.files.length > 0) { return $q.all(promises).then(function success() { return filesLoader(config, params); }); } else { return $q.all(promises); } } return { /** * Let you get a module config object * @param moduleName String the name of the module * @returns {*} */ getModuleConfig: function(moduleName) { if(!angular.isString(moduleName)) { throw new Error('You need to give the name of the module to get'); } if(!modules[moduleName]) { return null; } return modules[moduleName]; }, /** * Let you define a module config object * @param moduleConfig Object the module config object * @returns {*} */ setModuleConfig: function(moduleConfig) { if(!angular.isObject(moduleConfig)) { throw new Error('You need to give the module config object to set'); } modules[moduleConfig.name] = moduleConfig; return moduleConfig; }, /** * Returns the list of loaded modules * @returns {string[]} */ getModules: function() { return regModules; }, /** * Let you check if a module has been loaded into Angular or not * @param modulesNames String/Object a module name, or a list of module names * @returns {boolean} */ isLoaded: function(modulesNames) { var moduleLoaded = function(module) { var isLoaded = regModules.indexOf(module) > -1; if(!isLoaded) { isLoaded = !!moduleExists(module); } return isLoaded; } if(angular.isString(modulesNames)) { modulesNames = [modulesNames]; } if(angular.isArray(modulesNames)) { var i, len; for(i = 0, len = modulesNames.length; i < len; i++) { if(!moduleLoaded(modulesNames[i])) { return false; } } return true; } else { throw new Error('You need to define the module(s) name(s)'); } }, /** * Load a module or a list of modules into Angular * @param module Mixed the name of a predefined module config object, or a module config object, or an array of either * @param params Object optional parameters * @returns promise */ load: function(module, params) { var self = this, config = null, moduleCache = [], deferredList = [], deferred = $q.defer(), moduleName, errText; if(angular.isUndefined(params)) { params = {}; } // If module is an array, break it down if(angular.isArray(module)) { // Resubmit each entry as a single module angular.forEach(module, function(m) { if(m) { deferredList.push(self.load(m, params)); } }); // Resolve the promise once everything has loaded $q.all(deferredList).then(function success() { deferred.resolve(module); }, function error(err) { deferred.reject(err); }); return deferred.promise; } moduleName = getModuleName(module); // Get or Set a configuration depending on what was passed in if(typeof module === 'string') { config = self.getModuleConfig(module); if(!config) { config = { files: [module] }; moduleName = null; } } else if(typeof module === 'object') { config = self.setModuleConfig(module); } if(config === null) { errText = 'Module "' + moduleName + '" is not configured, cannot load.'; $log.error(errText); deferred.reject(new Error(errText)); } else { // deprecated if(angular.isDefined(config.template)) { if(angular.isUndefined(config.files)) { config.files = []; } if(angular.isString(config.template)) { config.files.push(config.template); } else if(angular.isArray(config.template)) { config.files.concat(config.template); } } } moduleCache.push = function(value) { if(this.indexOf(value) === -1) { Array.prototype.push.apply(this, arguments); } }; // If this module has been loaded before, re-use it. if(angular.isDefined(moduleName) && moduleExists(moduleName) && regModules.indexOf(moduleName) !== -1) { moduleCache.push(moduleName); // if we don't want to load new files, resolve here if(angular.isUndefined(config.files)) { deferred.resolve(); return deferred.promise; } } var localParams = {}; angular.extend(localParams, params, config); var loadDependencies = function loadDependencies(module) { var moduleName, loadedModule, requires, diff, promisesList = []; moduleName = getModuleName(module); if(moduleName === null) { return $q.when(); } else { try { loadedModule = getModule(moduleName); } catch(e) { var deferred = $q.defer(); $log.error(e.message); deferred.reject(e); return deferred.promise; } requires = getRequires(loadedModule); } angular.forEach(requires, function(requireEntry) { // If no configuration is provided, try and find one from a previous load. // If there isn't one, bail and let the normal flow run if(typeof requireEntry === 'string') { var config = self.getModuleConfig(requireEntry); if(config === null) { moduleCache.push(requireEntry); // We don't know about this module, but something else might, so push it anyway. return; } requireEntry = config; } // Check if this dependency has been loaded previously if(moduleExists(requireEntry.name)) { if(typeof module !== 'string') { // compare against the already loaded module to see if the new definition adds any new files diff = requireEntry.files.filter(function(n) { return self.getModuleConfig(requireEntry.name).files.indexOf(n) < 0; }); // If the module was redefined, advise via the console if(diff.length !== 0) { $log.warn('Module "', moduleName, '" attempted to redefine configuration for dependency. "', requireEntry.name, '"\n Additional Files Loaded:', diff); } // Push everything to the file loader, it will weed out the duplicates. promisesList.push(filesLoader(requireEntry.files, localParams).then(function() { return loadDependencies(requireEntry); })); } return; } else if(typeof requireEntry === 'object') { if(requireEntry.hasOwnProperty('name') && requireEntry['name']) { // The dependency doesn't exist in the module cache and is a new configuration, so store and push it. self.setModuleConfig(requireEntry); moduleCache.push(requireEntry['name']); } // CSS Loading Handler if(requireEntry.hasOwnProperty('css') && requireEntry['css'].length !== 0) { // Locate the document insertion point angular.forEach(requireEntry['css'], function(path) { buildElement('css', path, localParams); }); } // CSS End. } // Check if the dependency has any files that need to be loaded. If there are, push a new promise to the promise list. if(requireEntry.hasOwnProperty('files') && requireEntry.files.length !== 0) { if(requireEntry.files) { promisesList.push(filesLoader(requireEntry, localParams).then(function() { return loadDependencies(requireEntry); })); } } }); // Create a wrapper promise to watch the promise list and resolve it once everything is done. return $q.all(promisesList); } filesLoader(config, localParams).then(function success() { if(moduleName === null) { deferred.resolve(module); } else { moduleCache.push(moduleName); loadDependencies(moduleName).then(function success() { try { justLoaded = []; register(providers, moduleCache, localParams); } catch(e) { $log.error(e.message); deferred.reject(e); return; } $timeout(function() { deferred.resolve(module); }); }, function error(err) { $timeout(function() { deferred.reject(err); }); }); } }, function error(err) { deferred.reject(err); }); return deferred.promise; } }; }]; this.config = function(config) { if(angular.isDefined(config.jsLoader) || angular.isDefined(config.asyncLoader)) { if(!angular.isFunction(config.jsLoader || config.asyncLoader)) { throw('The js loader needs to be a function'); } jsLoader = config.jsLoader || config.asyncLoader; } if(angular.isDefined(config.cssLoader)) { if(!angular.isFunction(config.cssLoader)) { throw('The css loader needs to be a function'); } cssLoader = config.cssLoader; } if(angular.isDefined(config.templatesLoader)) { if(!angular.isFunction(config.templatesLoader)) { throw('The template loader needs to be a function'); } templatesLoader = config.templatesLoader; } // for bootstrap apps, we need to define the main module name if(angular.isDefined(config.loadedModules)) { var addRegModule = function(loadedModule) { if(regModules.indexOf(loadedModule) < 0) { regModules.push(loadedModule); angular.forEach(angular.module(loadedModule).requires, addRegModule); } }; angular.forEach(config.loadedModules, addRegModule); } // If we want to define modules configs if(angular.isDefined(config.modules)) { if(angular.isArray(config.modules)) { angular.forEach(config.modules, function(moduleConfig) { modules[moduleConfig.name] = moduleConfig; }); } else { modules[config.modules.name] = config.modules; } } if(angular.isDefined(config.debug)) { debug = config.debug; } if(angular.isDefined(config.events)) { events = config.events; } }; }]); ocLazyLoad.directive('ocLazyLoad', ['$ocLazyLoad', '$compile', '$animate', '$parse', function($ocLazyLoad, $compile, $animate, $parse) { return { restrict: 'A', terminal: true, priority: 1000, compile: function(element, attrs) { // we store the content and remove it before compilation var content = element[0].innerHTML; element.html(''); return function($scope, $element, $attr) { var model = $parse($attr.ocLazyLoad); $scope.$watch(function() { // it can be a module name (string), an object, an array, or a scope reference to any of this return model($scope) || $attr.ocLazyLoad; }, function(moduleName) { if(angular.isDefined(moduleName)) { $ocLazyLoad.load(moduleName).then(function success(moduleConfig) { $animate.enter($compile(content)($scope), null, $element); }); } }, true); }; } }; }]); /** * Get the list of required modules/services/... for this module * @param module * @returns {Array} */ function getRequires(module) { var requires = []; angular.forEach(module.requires, function(requireModule) { if(regModules.indexOf(requireModule) === -1) { requires.push(requireModule); } }); return requires; } /** * Check if a module exists and returns it if it does * @param moduleName * @returns {boolean} */ function moduleExists(moduleName) { try { return angular.module(moduleName); } catch(e) { if(/No module/.test(e) || (e.message.indexOf('$injector:nomod') > -1)) { return false; } } } function getModule(moduleName) { try { return angular.module(moduleName); } catch(e) { // this error message really suxx if(/No module/.test(e) || (e.message.indexOf('$injector:nomod') > -1)) { e.message = 'The module "' + moduleName + '" that you are trying to load does not exist. ' + e.message } throw e; } } function invokeQueue(providers, queue, moduleName, reconfig) { if(!queue) { return; } var i, len, args, provider; for(i = 0, len = queue.length; i < len; i++) { args = queue[i]; if(angular.isArray(args)) { if(providers !== null) { if(providers.hasOwnProperty(args[0])) { provider = providers[args[0]]; } else { throw new Error('unsupported provider ' + args[0]); } } var isNew = registerInvokeList(args, moduleName); if(args[1] !== 'invoke') { if(isNew && angular.isDefined(provider)) { provider[args[1]].apply(provider, args[2]); } } else { // config block var callInvoke = function(fct) { var invoked = regConfigs.indexOf(moduleName + '-' + fct); if(invoked === -1 || reconfig) { if(invoked === -1) { regConfigs.push(moduleName + '-' + fct); } if(angular.isDefined(provider)) { provider[args[1]].apply(provider, args[2]); } } } if(angular.isFunction(args[2][0])) { callInvoke(args[2][0]); } else if(angular.isArray(args[2][0])) { for(var j = 0, jlen = args[2][0].length; j < jlen; j++) { if(angular.isFunction(args[2][0][j])) { callInvoke(args[2][0][j]); } } } } } } } /** * Register a new module and load it * @param providers * @param registerModules * @returns {*} */ function register(providers, registerModules, params) { if(registerModules) { var k, r, moduleName, moduleFn, tempRunBlocks = []; for(k = registerModules.length - 1; k >= 0; k--) { moduleName = registerModules[k]; if(typeof moduleName !== 'string') { moduleName = getModuleName(moduleName); } if(!moduleName || justLoaded.indexOf(moduleName) !== -1) { continue; } var newModule = regModules.indexOf(moduleName) === -1; moduleFn = angular.module(moduleName); if(newModule) { // new module regModules.push(moduleName); register(providers, moduleFn.requires, params); } if(moduleFn._runBlocks.length > 0) { // new run blocks detected! Replace the old ones (if existing) runBlocks[moduleName] = []; while(moduleFn._runBlocks.length > 0) { runBlocks[moduleName].push(moduleFn._runBlocks.shift()); } } if(angular.isDefined(runBlocks[moduleName]) && (newModule || params.rerun)) { tempRunBlocks = tempRunBlocks.concat(runBlocks[moduleName]); } invokeQueue(providers, moduleFn._invokeQueue, moduleName, params.reconfig); invokeQueue(providers, moduleFn._configBlocks, moduleName, params.reconfig); // angular 1.3+ broadcast(newModule ? 'ocLazyLoad.moduleLoaded' : 'ocLazyLoad.moduleReloaded', moduleName); registerModules.pop(); justLoaded.push(moduleName); } // execute the run blocks at the end var instanceInjector = providers.getInstanceInjector(); angular.forEach(tempRunBlocks, function(fn) { instanceInjector.invoke(fn); }); } } /** * Register an invoke * @param args * @returns {*} */ function registerInvokeList(args, moduleName) { var invokeList = args[2][0], type = args[1], newInvoke = false; if(angular.isUndefined(regInvokes[moduleName])) { regInvokes[moduleName] = {}; } if(angular.isUndefined(regInvokes[moduleName][type])) { regInvokes[moduleName][type] = []; } var onInvoke = function(invokeName) { newInvoke = true; regInvokes[moduleName][type].push(invokeName); broadcast('ocLazyLoad.componentLoaded', [moduleName, type, invokeName]); } if(angular.isString(invokeList) && regInvokes[moduleName][type].indexOf(invokeList) === -1) { onInvoke(invokeList); } else if(angular.isObject(invokeList)) { angular.forEach(invokeList, function(invoke) { if(angular.isString(invoke) && regInvokes[moduleName][type].indexOf(invoke) === -1) { onInvoke(invoke); } }); } else { return false; } return newInvoke; } function getModuleName(module) { if(module === null) { return null; } var moduleName = null; if(typeof module === 'string') { moduleName = module; } else if(typeof module === 'object' && module.hasOwnProperty('name') && typeof module.name === 'string') { moduleName = module.name; } return moduleName; } /** * Get the list of existing registered modules * @param element */ function init(element) { var elements = [element], appElement, moduleName, names = ['ng:app', 'ng-app', 'x-ng-app', 'data-ng-app'], NG_APP_CLASS_REGEXP = /\sng[:\-]app(:\s*([\w\d_]+);?)?\s/; function append(elm) { return (elm && elements.push(elm)); } angular.forEach(names, function(name) { names[name] = true; append(document.getElementById(name)); name = name.replace(':', '\\:'); if(element[0].querySelectorAll) { angular.forEach(element[0].querySelectorAll('.' + name), append); angular.forEach(element[0].querySelectorAll('.' + name + '\\:'), append); angular.forEach(element[0].querySelectorAll('[' + name + ']'), append); } }); //TODO: search the script tags for angular.bootstrap angular.forEach(elements, function(elm) { if(!appElement) { var className = ' ' + element.className + ' '; var match = NG_APP_CLASS_REGEXP.exec(className); if(match) { appElement = elm; moduleName = (match[2] || '').replace(/\s+/g, ','); } else { angular.forEach(elm.attributes, function(attr) { if(!appElement && names[attr.name]) { appElement = elm; moduleName = attr.value; } }); } } }); if(appElement) { (function addReg(moduleName) { if(regModules.indexOf(moduleName) === -1) { // register existing modules regModules.push(moduleName); var mainModule = angular.module(moduleName); // register existing components (directives, services, ...) invokeQueue(null, mainModule._invokeQueue, moduleName); invokeQueue(null, mainModule._configBlocks, moduleName); // angular 1.3+ angular.forEach(mainModule.requires, addReg); } })(moduleName); } } // Array.indexOf polyfill for IE8 if(!Array.prototype.indexOf) { Array.prototype.indexOf = function(searchElement, fromIndex) { var k; // 1. Let O be the result of calling ToObject passing // the this value as the argument. if(this == null) { throw new TypeError('"this" is null or not defined'); } var O = Object(this); // 2. Let lenValue be the result of calling the Get // internal method of O with the argument "length". // 3. Let len be ToUint32(lenValue). var len = O.length >>> 0; // 4. If len is 0, return -1. if(len === 0) { return -1; } // 5. If argument fromIndex was passed let n be // ToInteger(fromIndex); else let n be 0. var n = +fromIndex || 0; if(Math.abs(n) === Infinity) { n = 0; } // 6. If n >= len, return -1. if(n >= len) { return -1; } // 7. If n >= 0, then Let k be n. // 8. Else, n<0, Let k be len - abs(n). // If k is less than 0, then let k be 0. k = Math.max(n >= 0 ? n : len - Math.abs(n), 0); // 9. Repeat, while k < len while(k < len) { // a. Let Pk be ToString(k). // This is implicit for LHS operands of the in operator // b. Let kPresent be the result of calling the // HasProperty internal method of O with argument Pk. // This step can be combined with c // c. If kPresent is true, then // i. Let elementK be the result of calling the Get // internal method of O with the argument ToString(k). // ii. Let same be the result of applying the // Strict Equality Comparison Algorithm to // searchElement and elementK. // iii. If same is true, return k. if(k in O && O[k] === searchElement) { return k; } k++; } return -1; }; } })();