diff --git a/README.md b/README.md index 531e70b..c3e97ac 100644 --- a/README.md +++ b/README.md @@ -401,14 +401,6 @@ Pjax behavior, as you wish. Here is a summary of functions: -- `Pjax.isSupported` (`function()`): return wheter or not the browser handle pushState correctly -- `Pjax.on` (`function(els, events, listener, useCapture)`): addEventListener, that handles NodeList & supports space separated event name -- `Pjax.off` (`function(els, events, listener, useCapture)`): removeEventListener, that handles NodeList & supports space separated event name -- `Pjax.trigger` (`function(els, events)`): fireEvent, that handles NodeList & supports space separated event name -- `Pjax.clone` (`function(obj)`): clone object -- `Pjax.executeScripts` (`function(el)`): execute scripts that are inside an element (script src or inline scripts through `Pjax.evalScript`) -- `Pjax.evalScript` (`function(el)`): execute inline script. Don't execute a script if it contains `document.write`. - - `Pjax.prototype.log` (`function()`): console.log function that is enable/disabled by `debug` option - `Pjax.prototype.getElements` (`function(el)`): retrieve elements to attach Pjax behavior - `Pjax.prototype.parseDOM` (`function(el)`): parse DOM to attach behavior using `Pjax.prototype.getElements` & `Pjax.prototype.attachLink` diff --git a/src/pjax.js b/src/pjax.js deleted file mode 100644 index cccfc2e..0000000 --- a/src/pjax.js +++ /dev/null @@ -1,615 +0,0 @@ -;(function(root, factory) { - if (typeof exports === "object") { - // CommonJS - module.exports = factory() - } - else if (typeof define === "function" && define.amd) { - // AMD - define([], factory) - } - else { - // Global Variables - root.Pjax = factory() - } -}(this, function() { - "use strict"; - - function newUid() { - return (new Date().getTime()) - } - - var Pjax = function(options) { - this.firstrun = true - - this.options = options - this.options.elements = this.options.elements || "a[href], form[action]" - this.options.selectors = this.options.selectors || ["title", ".js-Pjax"] - this.options.switches = this.options.switches || {} - this.options.switchesOptions = this.options.switchesOptions || {} - this.options.history = this.options.history || true - this.options.currentUrlFullReload = this.options.currentUrlFullReload || false - this.options.analytics = this.options.analytics || function(options) { - // options.backward or options.foward can be true or undefined - // by default, we do track back/foward hit - // https://productforums.google.com/forum/#!topic/analytics/WVwMDjLhXYk - if (window._gaq) { - _gaq.push(["_trackPageview"]) - } - if (window.ga) { - ga("send", "pageview", {"page": options.url, "title": options.title}) - } - } - this.options.scrollTo = this.options.scrollTo || 0 - this.options.debug = this.options.debug || false - - this.maxUid = this.lastUid = newUid() - - // we can’t replace body.outerHTML or head.outerHTML - // it create a bug where new body or new head are created in the dom - // if you set head.outerHTML, a new body tag is appended, so the dom get 2 body - // & it break the switchFallback which replace head & body - if (!this.options.switches.head) { - this.options.switches.head = this.switchElementsAlt - } - if (!this.options.switches.body) { - this.options.switches.body = this.switchElementsAlt - } - - this.log("Pjax options", this.options) - - if (typeof options.analytics !== "function") { - options.analytics = function() {} - } - - this.parseDOM(document) - - Pjax.on(window, "popstate", function(st) { - if (st.state) { - var opt = Pjax.clone(this.options) - opt.url = st.state.url - opt.title = st.state.title - opt.history = false - - if (st.state.uid < this.lastUid) { - opt.backward = true - } - else { - opt.forward = true - } - this.lastUid = st.state.uid - - // @todo implement history cache here, based on uid - this.loadUrl(st.state.url, opt) - } - }.bind(this)) - - } - - // make internal methods public - Pjax.isSupported = function() { - // Borrowed wholesale from https://github.com/defunkt/jquery-pjax - return window.history && - window.history.pushState && - window.history.replaceState && - // pushState isn’t reliable on iOS until 5. - !navigator.userAgent.match(/((iPod|iPhone|iPad).+\bOS\s+[1-4]\D|WebApps\/.+CFNetwork)/) - } - - Pjax.forEachEls = function(els, fn, context) { - if (els instanceof HTMLCollection || els instanceof NodeList) { - return Array.prototype.forEach.call(els, fn, context) - } - // assume simple dom element - fn.call(context, els) - } - - Pjax.on = function(els, events, listener, useCapture) { - events = (typeof events === "string" ? events.split(" ") : events) - - events.forEach(function(e) { - Pjax.forEachEls(els, function(el) { - el.addEventListener(e, listener, useCapture) - }) - }, this) - } - - Pjax.off = function(els, events, listener, useCapture) { - events = (typeof events === "string" ? events.split(" ") : events) - - events.forEach(function(e) { - Pjax.forEachEls(els, function(el) { - el.removeEventListener(e, listener, useCapture) - }) - }, this) - } - - Pjax.trigger = function(els, events) { - events = (typeof events === "string" ? events.split(" ") : events) - - events.forEach(function(e) { - var event - if (document.createEvent) { - event = document.createEvent("HTMLEvents") - event.initEvent(e, true, true) - } - else { - event = document.createEventObject() - event.eventType = e - } - - event.eventName = e - - if (document.createEvent) { - Pjax.forEachEls(els, function(el) { - el.dispatchEvent(event) - }) - } - else { - Pjax.forEachEls(els, function(el) { - el.fireEvent("on" + event.eventType, event) - }) - } - }, this) - } - - Pjax.clone = function(obj) { - if (null === obj || "object" != typeof obj) { - return obj - } - var copy = obj.constructor() - for (var attr in obj) { - if (obj.hasOwnProperty(attr)) { - copy[attr] = obj[attr] - } - } - return copy - } - - // Finds and executes scripts (used for newly added elements) - // Needed since innerHTML does not run scripts - Pjax.executeScripts = function(el) { - // console.log("going to execute scripts for ", el) - Pjax.forEachEls(el.querySelectorAll("script"), function(script) { - if (!script.type || script.type.toLowerCase() === "text/javascript") { - if (script.parentNode) { - script.parentNode.removeChild(script) - } - Pjax.evalScript(script) - } - }) - } - - Pjax.evalScript = function(el) { - // console.log("going to execute script", el) - - var code = (el.text || el.textContent || el.innerHTML || "") - , head = document.querySelector("head") || document.documentElement - , script = document.createElement("script") - - if (code.match("document.write")) { - if (console && console.log) { - console.log("Script contains document.write. Can’t be executed correctly. Code skipped ", el) - } - return false - } - - script.type = "text/javascript" - try { - script.appendChild(document.createTextNode(code)) - } - catch (e) { - // old IEs have funky script nodes - script.text = code - } - - // execute - head.insertBefore(script, head.firstChild) - head.removeChild(script) // avoid pollution - - return true - } - - Pjax.prototype = { - log: function() { - if (this.options.debug && console) { - if (typeof console.log === "function") { - console.log.apply(console, arguments); - } - // ie is weird - else if (console.log) { - console.log(arguments); - } - } - } - - , getElements: function(el) { - return el.querySelectorAll(this.options.elements) - } - - , parseDOM: function(el) { - Pjax.forEachEls(this.getElements(el), function(el) { - switch (el.tagName.toLowerCase()) { - case "a": this.attachLink(el) - break - case "form": - // todo - this.log("Pjax doesnt support
yet. TODO :)") - break - default: - throw "Pjax can only be applied on or submit" - } - }, this) - } - - , attachLink: function(el) { - Pjax.on(el, "click", function(event) { - //var el = event.currentTarget - - // Don’t break browser special behavior on links (like page in new window) - if (event.which > 1 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey) { - return -1 - } - - // Ignore external links. - if (el.protocol !== window.location.protocol || el.host !== window.location.host) { - return -2 - } - - // Ignore anchors on the same page - if (el.pathname === location.pathname && el.hash.length > 0) { - return -3 - } - - // Ignore anchors on the same page - if (el.hash && el.href.replace(el.hash, "") === location.href.replace(location.hash, "")) { - return -4 - } - - // Ignore empty anchor "foo.html#" - if (el.href === location.href + "#") { - return -5 - } - - event.preventDefault() - - if (this.options.currentUrlFullReload) { - if (el.href === window.location.href) { - window.location.reload() - return -6 - } - } - - this.loadUrl(el.href, Pjax.clone(this.options)) - }.bind(this)) - - Pjax.on(el, "keyup", function(event) { - this.log("pjax todo") - // todo handle a link hitted by keyboard (enter/space) when focus is on it - }.bind(this)) - } - - , forEachSelectors: function(cb, context, DOMcontext) { - DOMcontext = DOMcontext || document - this.options.selectors.forEach(function(selector) { - Pjax.forEachEls(DOMcontext.querySelectorAll(selector), cb, context) - }) - } - - , switchSelectors: function(selectors, fromEl, toEl, options) { - selectors.forEach(function(selector) { - var newEls = fromEl.querySelectorAll(selector) - var oldEls = toEl.querySelectorAll(selector) - this.log("Pjax switch", selector, newEls, oldEls) - if (newEls.length !== oldEls.length) { - // Pjax.forEachEls(newEls, function(el) { - // this.log("newEl", el, el.outerHTML) - // }, this) - // Pjax.forEachEls(oldEls, function(el) { - // this.log("oldEl", el, el.outerHTML) - // }, this) - throw "DOM doesn’t look the same on new loaded page: ’" + selector + "’ - new " + newEls.length + ", old " + oldEls.length - } - - Pjax.forEachEls(newEls, function(newEl, i) { - var oldEl = oldEls[i] - this.log("newEl", newEl, "oldEl", oldEl) - if (this.options.switches[selector]) { - this.options.switches[selector].bind(this)(oldEl, newEl, options, this.options.switchesOptions[selector]) - } - else { - Pjax.switches.outerHTML.bind(this)(oldEl, newEl, options) - } - }, this) - }, this) - } - - // too much problem with the code below - // + it’s too dangerous - // , switchFallback: function(fromEl, toEl) { - // this.switchSelectors(["head", "body"], fromEl, toEl) - // // execute script when DOM is like it should be - // Pjax.executeScripts(document.querySelector("head")) - // Pjax.executeScripts(document.querySelector("body")) - // } - - , latestChance: function(href) { - window.location = href - } - - , onSwitch: function() { - Pjax.trigger(window, "resize scroll") - } - - , loadContent: function(html, options) { - var tmpEl = document.implementation.createHTMLDocument("") - - // parse HTML attributes to copy them - // since we are forced to use documentElement.innerHTML (outerHTML can't be used for ) - , htmlRegex = /]+>/gi - , htmlAttribsRegex = /\s?[a-z:]+(?:\=(?:\'|\")[^\'\">]+(?:\'|\"))*/gi - , matches = html.match(htmlRegex) - if (matches && matches.length) { - matches = matches[0].match(htmlAttribsRegex) - if (matches.length) { - matches.shift() - matches.forEach(function(htmlAttrib) { - var attr = htmlAttrib.trim().split("=") - tmpEl.documentElement.setAttribute(attr[0], attr[1].slice(1, -1)) - }) - } - } - - tmpEl.documentElement.innerHTML = html - this.log("load content", tmpEl.documentElement.attributes, tmpEl.documentElement.innerHTML.length) - // try { - this.switchSelectors(this.options.selectors, tmpEl, document, options) - - // FF bug: Won’t autofocus fields that are inserted via JS. - // This behavior is incorrect. So if theres no current focus, autofocus - // the last field. - // - // http://www.w3.org/html/wg/drafts/html/master/forms.html - var autofocusEl = Array.prototype.slice.call(document.querySelectorAll("[autofocus]")).pop() - if (autofocusEl && document.activeElement !== autofocusEl) { - autofocusEl.focus(); - } - - // execute scripts when DOM have been completely updated - this.options.selectors.forEach(function(selector) { - Pjax.forEachEls(document.querySelectorAll(selector), function(el) { - Pjax.executeScripts(el) - }) - }) - // } - // catch(e) { - // if (this.options.debug) { - // this.log("Pjax switch fail: ", e) - // } - // this.switchFallback(tmpEl, document) - // } - } - - , doRequest: function(location, callback) { - var request = new XMLHttpRequest() - - request.onreadystatechange = function() { - if (request.readyState === 4 && request.status === 200) { - callback(request.responseText) - } - else if (request.readyState === 4 && (request.status === 404 || request.status === 500)){ - callback(false) - } - } - - request.open("GET", location + (!/[?&]/.test(location) ? "?" : "&") + (new Date().getTime()), true) - request.setRequestHeader("X-Requested-With", "XMLHttpRequest") - request.send(null) - } - - , loadUrl: function(href, options) { - this.log("load href", href, options) - - Pjax.trigger(document, "pjax:send", options); - - // Do the request - this.doRequest(href, function(html) { - - // Fail if unable to load HTML via AJAX - if (html === false) { - Pjax.trigger(document,"pjax:complete pjax:error", options) - - return - } - - // Clear out any focused controls before inserting new page contents. - document.activeElement.blur() - - try { - this.loadContent(html, options) - } - catch (e) { - if (!this.options.debug) { - if (console && console.error) { - console.error("Pjax switch fail: ", e) - } - this.latestChance(href) - return - } - else { - throw e - } - } - - if (options.history) { - - if (this.firstrun) { - this.lastUid = this.maxUid = newUid() - this.firstrun = false - window.history.replaceState({ - "url": window.location.href - , "title": document.title - , "uid": this.maxUid - } - , document.title) - } - - // Update browser history - this.lastUid = this.maxUid = newUid() - window.history.pushState({ - "url": href - , "title": options.title - , "uid": this.maxUid - } - , options.title - , href) - } - - this.forEachSelectors(function(el) { - this.parseDOM(el) - }, this) - - // Fire Events - Pjax.trigger(document,"pjax:complete pjax:success", options) - - options.analytics() - - // Scroll page to top on new page load - if (options.scrollTo !== false) { - if (options.scrollTo.length > 1) { - window.scrollTo(options.scrollTo[0], options.scrollTo[1]) - } - else { - window.scrollTo(0, options.scrollTo) - } - } - }.bind(this)) - } - } - - Pjax.switches = { - outerHTML: function(oldEl, newEl, options) { - oldEl.outerHTML = newEl.outerHTML - this.onSwitch() - } - - , innerHTML: function(oldEl, newEl, options) { - oldEl.innerHTML = newEl.innerHTML - oldEl.className = newEl.className - this.onSwitch() - } - - , sideBySide: function(oldEl, newEl, options, switchOptions) { - var forEach = Array.prototype.forEach - , elsToRemove = [] - , elsToAdd = [] - , fragToAppend = document.createDocumentFragment() - // height transition are shitty on safari - // so commented for now (until I found something ?) - // , relevantHeight = 0 - , animationEventNames = "animationend webkitAnimationEnd MSAnimationEnd oanimationend" - , animatedElsNumber = 0 - , sexyAnimationEnd = function(e) { - if (e.target != e.currentTarget) { - // end triggered by an animation on a child - return - } - - animatedElsNumber-- - if (animatedElsNumber <= 0 && elsToRemove) { - elsToRemove.forEach(function(el) { - // browsing quickly can make the el - // already removed by last page update ? - if (el.parentNode) { - el.parentNode.removeChild(el) - } - }) - - elsToAdd.forEach(function(el) { - el.className = el.className.replace(el.getAttribute("data-pjax-classes"), "") - el.removeAttribute("data-pjax-classes") - // Pjax.off(el, animationEventNames, sexyAnimationEnd, true) - }) - - elsToAdd = null // free memory - elsToRemove = null // free memory - - // assume the height is now useless (avoid bug since there is overflow hidden on the parent) - // oldEl.style.height = "auto" - - // this is to trigger some repaint (example: picturefill) - this.onSwitch() - //Pjax.trigger(window, "scroll") - } - }.bind(this) - - // Force height to be able to trigger css animation - // here we get the relevant height - // oldEl.parentNode.appendChild(newEl) - // relevantHeight = newEl.getBoundingClientRect().height - // oldEl.parentNode.removeChild(newEl) - // oldEl.style.height = oldEl.getBoundingClientRect().height + "px" - - switchOptions = switchOptions || {} - - forEach.call(oldEl.childNodes, function(el) { - elsToRemove.push(el) - if (el.classList && !el.classList.contains("js-Pjax-remove")) { - // for fast switch, clean element that just have been added, & not cleaned yet. - if (el.hasAttribute("data-pjax-classes")) { - el.className = el.className.replace(el.getAttribute("data-pjax-classes"), "") - el.removeAttribute("data-pjax-classes") - } - el.classList.add("js-Pjax-remove") - if (switchOptions.callbacks && switchOptions.callbacks.removeElement) { - switchOptions.callbacks.removeElement(el) - } - if (switchOptions.classNames) { - el.className += " " + switchOptions.classNames.remove + " " + (options.backward ? switchOptions.classNames.backward : switchOptions.classNames.forward) - } - animatedElsNumber++ - Pjax.on(el, animationEventNames, sexyAnimationEnd, true) - } - }) - - forEach.call(newEl.childNodes, function(el) { - if (el.classList) { - var addClasses = "" - if (switchOptions.classNames) { - addClasses = " js-Pjax-add " + switchOptions.classNames.add + " " + (options.backward ? switchOptions.classNames.forward : switchOptions.classNames.backward) - } - if (switchOptions.callbacks && switchOptions.callbacks.addElement) { - switchOptions.callbacks.addElement(el) - } - el.className += addClasses - el.setAttribute("data-pjax-classes", addClasses) - elsToAdd.push(el) - fragToAppend.appendChild(el) - animatedElsNumber++ - Pjax.on(el, animationEventNames, sexyAnimationEnd, true) - } - }) - - // pass all className of the parent - oldEl.className = newEl.className - oldEl.appendChild(fragToAppend) - - // oldEl.style.height = relevantHeight + "px" - } - } - - if (Pjax.isSupported()) { - return Pjax - } - // if there isn’t required browser functions, returning stupid api - else { - var stupidPjax = function() {} - for (var key in Pjax.prototype) { - if (Pjax.prototype.hasOwnProperty(key) && typeof Pjax.prototype[key] === "function") { - stupidPjax[key] = stupidPjax - } - } - - return stupidPjax - } - -})); diff --git a/src/scripts/index.js b/src/scripts/index.js new file mode 100644 index 0000000..a2ee1d5 --- /dev/null +++ b/src/scripts/index.js @@ -0,0 +1,256 @@ +var newUid = require("./lib/uniqueid.js") + +var Pjax = function(options) { + this.firstrun = true + + this.options = options + this.options.elements = this.options.elements || "a[href], form[action]" + this.options.selectors = this.options.selectors || ["title", ".js-Pjax"] + this.options.switches = this.options.switches || {} + this.options.switchesOptions = this.options.switchesOptions || {} + this.options.history = this.options.history || true + this.options.analytics = this.options.analytics || function(options) { + // options.backward or options.foward can be true or undefined + // by default, we do track back/foward hit + // https://productforums.google.com/forum/#!topic/analytics/WVwMDjLhXYk + if (window._gaq) { + _gaq.push(["_trackPageview"]) + } + if (window.ga) { + ga("send", "pageview", {page: options.url, title: options.title}) + } + } + this.options.scrollTo = this.options.scrollTo || 0 + this.options.debug = this.options.debug || false + + this.maxUid = this.lastUid = newUid() + + // we can’t replace body.outerHTML or head.outerHTML + // it create a bug where new body or new head are created in the dom + // if you set head.outerHTML, a new body tag is appended, so the dom get 2 body + // & it break the switchFallback which replace head & body + if (!this.options.switches.head) { + this.options.switches.head = this.switchElementsAlt + } + if (!this.options.switches.body) { + this.options.switches.body = this.switchElementsAlt + } + + this.log("Pjax options", this.options) + + if (typeof options.analytics !== "function") { + options.analytics = function() {} + } + + this.parseDOM(document) + + Pjax.on(window, "popstate", function(st) { + if (st.state) { + var opt = Pjax.clone(this.options) + opt.url = st.state.url + opt.title = st.state.title + opt.history = false + + if (st.state.uid < this.lastUid) { + opt.backward = true + } + else { + opt.forward = true + } + this.lastUid = st.state.uid + + // @todo implement history cache here, based on uid + this.loadUrl(st.state.url, opt) + } + }.bind(this)) + + } + +Pjax.prototype = { + log: require("./lib/proto/log.js"), + + getElements: require("./lib/proto/get-elements.js"), + + parseDOM: require("./lib/proto/parse-dom.js"), + + attachLink: require("./lib/proto/attach-link.js"), + + forEachSelectors: function(cb, context, DOMcontext) { + return require("./lib/foreach-selectors.js")(this.options.selectors, cb, context, DOMcontext) + }, + + switchSelectors: function(selectors, fromEl, toEl, options) { + return require("./lib/switch-selectors.js")(this.options.switches, this.options.switchesOptions, selectors, fromEl, toEl, options) + }, + + // too much problem with the code below + // + it’s too dangerous +// switchFallback: function(fromEl, toEl) { +// this.switchSelectors(["head", "body"], fromEl, toEl) +// // execute script when DOM is like it should be +// Pjax.executeScripts(document.querySelector("head")) +// Pjax.executeScripts(document.querySelector("body")) +// } + + latestChance: function(href) { + window.location = href + }, + + onSwitch: function() { + Pjax.trigger(window, "resize scroll") + }, + + loadContent: function(html, options) { + var tmpEl = document.implementation.createHTMLDocument() + + // parse HTML attributes to copy them + // since we are forced to use documentElement.innerHTML (outerHTML can't be used for ) + var htmlRegex = /]+>/gi + var htmlAttribsRegex = /\s?[a-z:]+(?:\=(?:\'|\")[^\'\">]+(?:\'|\"))*/gi + var matches = html.match(htmlRegex) + if (matches && matches.length) { + matches = matches[0].match(htmlAttribsRegex) + if (matches.length) { + matches.shift() + matches.forEach(function(htmlAttrib) { + var attr = htmlAttrib.trim().split("=") + tmpEl.documentElement.setAttribute(attr[0], attr[1].slice(1, -1)) + }) + } + } + + tmpEl.documentElement.innerHTML = html + this.log("load content", tmpEl.documentElement.attributes, tmpEl.documentElement.innerHTML.length) + + // Clear out any focused controls before inserting new page contents. + // we clear focus on non form elements + if (document.activeElement && !document.activeElement.value) { + try { + document.activeElement.blur() + } catch (e) { } + } + + // try { + this.switchSelectors(this.options.selectors, tmpEl, document, options) + + // FF bug: Won’t autofocus fields that are inserted via JS. + // This behavior is incorrect. So if theres no current focus, autofocus + // the last field. + // + // http://www.w3.org/html/wg/drafts/html/master/forms.html + var autofocusEl = Array.prototype.slice.call(document.querySelectorAll("[autofocus]")).pop() + if (autofocusEl && document.activeElement !== autofocusEl) { + autofocusEl.focus(); + } + + // execute scripts when DOM have been completely updated + this.options.selectors.forEach(function(selector) { + Pjax.forEachEls(document.querySelectorAll(selector), function(el) { + Pjax.executeScripts(el) + }) + }) + // } + // catch(e) { + // if (this.options.debug) { + // this.log("Pjax switch fail: ", e) + // } + // this.switchFallback(tmpEl, document) + // } + }, + + doRequest: require("./lib/request.js"), + + loadUrl: function(href, options) { + this.log("load href", href, options) + + Pjax.trigger(document, "pjax:send", options); + + // Do the request + this.doRequest(href, function(html) { + + // Fail if unable to load HTML via AJAX + if (html === false) { + Pjax.trigger(document,"pjax:complete pjax:error", options) + + return + } + + // Clear out any focused controls before inserting new page contents. + document.activeElement.blur() + + try { + this.loadContent(html, options) + } + catch (e) { + if (!this.options.debug) { + if (console && console.error) { + console.error("Pjax switch fail: ", e) + } + this.latestChance(href) + return + } + else { + throw e + } + } + + if (options.history) { + + if (this.firstrun) { + this.lastUid = this.maxUid = newUid() + this.firstrun = false + window.history.replaceState({ + url: window.location.href, + title: document.title, + uid: this.maxUid + }, + document.title) + } + + // Update browser history + this.lastUid = this.maxUid = newUid() + window.history.pushState({ + url: href, + title: options.title, + uid: this.maxUid + }, + options.title, + href) + } + + this.forEachSelectors(function(el) { + this.parseDOM(el) + }, this) + + // Fire Events + Pjax.trigger(document,"pjax:complete pjax:success", options) + + options.analytics() + + // Scroll page to top on new page load + if (options.scrollTo !== false) { + if (options.scrollTo.length > 1) { + window.scrollTo(options.scrollTo[0], options.scrollTo[1]) + } + else { + window.scrollTo(0, options.scrollTo) + } + } + }.bind(this)) + } +} + +if (Pjax.isSupported()) { + module.exports = Pjax +} +// if there isn’t required browser functions, returning stupid api +else { + var stupidPjax = function() {} + for (var key in Pjax.prototype) { + if (Pjax.prototype.hasOwnProperty(key) && typeof Pjax.prototype[key] === "function") { + stupidPjax[key] = stupidPjax + } + } + + module.exports = stupidPjax +}