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jquery.pjax.js bug问题解决集锦

2016-02-10 16:46 856 查看

jquery.pjax 是一个很好的局部刷新插件，但实际应用过程是还是会有很多小问题，部分问题解决如下：

1.pjax 局部加载时候，IE 存在缓存问题，很容易理解，pjax是通过jquery的ajax加载局部内容的，默认cache=true，这会导致ie下get数据从缓存中获取，解决办法是设置pjax options的cache=false，这样请求会自动变成如下方式：

/XXXX?_pjax=%23pjax-container&_=1455092848927

2.pjax 与 jquery datatables一起使用，浏览器回退或前进的时候导致双表头，原因是浏览器回退或者前进的时候状态内容获取的是cacheMapping的数据，只需要将这个禁用即可解决datatables双表头问题

3.pjax 与 highcharts一起使用，到是error 16错误，重复定义Highcharts，原因是多次加载了js文件，原因很好理解，解决方式是初始化highchart时候，先delete (Highcharts);

4.pjax 加载带有<script type="text/javascript" src="xxx.js"></script> javascript inline的时候，存在无法加载的情况。pjax的机制是自动异步加载html内容，然后会自动将script[src]的内容加入到<head>标签最后，但经常会出现问题，这个机制是为了减少js的请求次数，不必每次都加载js，但产生bug的具体原因不明(有知道的请留言)。解决方案：禁止将script[src]的内容拷贝到<head>中，牺牲js缓存，也就是每次加载container都加载一次js，问题解决。

上述几个问题已解决，下面是修改后的jquery.pjax.js

if ($.support.pjax) {
$(document).on('click', 'a[data-pjax]', function (event) {
$.pjax.click(event, { container: '#pjax-container' });
});
$(document).on('pjax:end', function () {
$(".fixed-left-menu li").removeClass("cur");
$("a[href='" + window.location.pathname + "']").closest("li").addClass("cur");
});
}

/*!
* Copyright 2012, Chris Wanstrath
* Released under the MIT License
* https://github.com/defunkt/jquery-pjax */

(function($){

// When called on a container with a selector, fetches the href with
// ajax into the container or with the data-pjax attribute on the link
// itself.
//
// Tries to make sure the back button and ctrl+click work the way
// you'd expect.
//
// Exported as $.fn.pjax
//
// Accepts a jQuery ajax options object that may include these
// pjax specific options:
//
//
// container - Where to stick the response body. Usually a String selector.
//             $(container).html(xhr.responseBody)
//             (default: current jquery context)
//      push - Whether to pushState the URL. Defaults to true (of course).
//   replace - Want to use replaceState instead? That's cool.
//
// For convenience the second parameter can be either the container or
// the options object.
//
// Returns the jQuery object
function fnPjax(selector, container, options) {
var context = this
return this.on('click.pjax', selector, function(event) {
var opts = $.extend({}, optionsFor(container, options))
if (!opts.container)
opts.container = $(this).attr('data-pjax') || context
handleClick(event, opts)
})
}

// Public: pjax on click handler
//
// Exported as $.pjax.click.
//
// event   - "click" jQuery.Event
// options - pjax options
//
// Examples
//
//   $(document).on('click', 'a', $.pjax.click)
//   // is the same as
//   $(document).pjax('a')
//
//  $(document).on('click', 'a', function(event) {
//    var container = $(this).closest('[data-pjax-container]')
//    $.pjax.click(event, container)
//  })
//
// Returns nothing.
function handleClick(event, container, options) {
options = optionsFor(container, options)

var link = event.currentTarget

if (link.tagName.toUpperCase() !== 'A')
throw "$.fn.pjax or $.pjax.click requires an anchor element"

// Middle click, cmd click, and ctrl click should open
// links in a new tab as normal.
if ( event.which > 1 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey )
return

// Ignore cross origin links
if ( location.protocol !== link.protocol || location.hostname !== link.hostname )
return

// Ignore case when a hash is being tacked on the current URL
if ( link.href.indexOf('#') > -1 && stripHash(link) == stripHash(location) )
return

// Ignore event with default prevented
if (event.isDefaultPrevented())
return

var defaults = {
url: link.href,
container: $(link).attr('data-pjax'),
target: link
}

var opts = $.extend({}, defaults, options)
var clickEvent = $.Event('pjax:click')
$(link).trigger(clickEvent, [opts])

if (!clickEvent.isDefaultPrevented()) {
pjax(opts)
event.preventDefault()
$(link).trigger('pjax:clicked', [opts])
}
}

// Public: pjax on form submit handler
//
// Exported as $.pjax.submit
//
// event   - "click" jQuery.Event
// options - pjax options
//
// Examples
//
//  $(document).on('submit', 'form', function(event) {
//    var container = $(this).closest('[data-pjax-container]')
//    $.pjax.submit(event, container)
//  })
//
// Returns nothing.
function handleSubmit(event, container, options) {
options = optionsFor(container, options)

var form = event.currentTarget
var $form = $(form)

if (form.tagName.toUpperCase() !== 'FORM')
throw "$.pjax.submit requires a form element"

var defaults = {
type: ($form.attr('method') || 'GET').toUpperCase(),
url: $form.attr('action'),
container: $form.attr('data-pjax'),
target: form
}

if (defaults.type !== 'GET' && window.FormData !== undefined) {
defaults.data = new FormData(form);
defaults.processData = false;
defaults.contentType = false;
} else {
// Can't handle file uploads, exit
if ($(form).find(':file').length) {
return;
}

// Fallback to manually serializing the fields
defaults.data = $(form).serializeArray();
}

pjax($.extend({}, defaults, options))

event.preventDefault()
}

// Loads a URL with ajax, puts the response body inside a container,
// then pushState()'s the loaded URL.
//
// Works just like $.ajax in that it accepts a jQuery ajax
// settings object (with keys like url, type, data, etc).
//
// Accepts these extra keys:
//
// container - Where to stick the response body.
//             $(container).html(xhr.responseBody)
//      push - Whether to pushState the URL. Defaults to true (of course).
//   replace - Want to use replaceState instead? That's cool.
//
// Use it just like $.ajax:
//
//   var xhr = $.pjax({ url: this.href, container: '#main' })
//   console.log( xhr.readyState )
//
// Returns whatever $.ajax returns.
function pjax(options) {
options = $.extend(true, {}, $.ajaxSettings, pjax.defaults, options)

if ($.isFunction(options.url)) {
options.url = options.url()
}

var target = options.target

var hash = parseURL(options.url).hash

var context = options.context = findContainerFor(options.container)

// We want the browser to maintain two separate internal caches: one
// for pjax'd partial page loads and one for normal page loads.
// Without adding this secret parameter, some browsers will often
// confuse the two.
if (!options.data) options.data = {}
if ($.isArray(options.data)) {
options.data.push({ name: '_pjax', value: context.selector })
} else {
options.data._pjax = context.selector
}
//
function fire(type, args, props) {
if (!props) props = {}
props.relatedTarget = target
var event = $.Event(type, props)
context.trigger(event, args)
return !event.isDefaultPrevented()
}

var timeoutTimer

options.beforeSend = function(xhr, settings) {
// No timeout for non-GET requests
// Its not safe to request the resource again with a fallback method.
if (settings.type !== 'GET') {
settings.timeout = 0
}

xhr.setRequestHeader('X-PJAX', 'true')
xhr.setRequestHeader('X-PJAX-Container', context.selector)

if (!fire('pjax:beforeSend', [xhr, settings]))
return false

if (settings.timeout > 0) {
timeoutTimer = setTimeout(function() {
if (fire('pjax:timeout', [xhr, options]))
xhr.abort('timeout')
}, settings.timeout)

// Clear timeout setting so jquerys internal timeout isn't invoked
settings.timeout = 0
}

var url = parseURL(settings.url)
if (hash) url.hash = hash
options.requestUrl = stripInternalParams(url)
}

options.complete = function(xhr, textStatus) {
if (timeoutTimer)
clearTimeout(timeoutTimer)

fire('pjax:complete', [xhr, textStatus, options])

fire('pjax:end', [xhr, options])
}

options.error = function(xhr, textStatus, errorThrown) {
var container = extractContainer("", xhr, options)

var allowed = fire('pjax:error', [xhr, textStatus, errorThrown, options])
if (options.type == 'GET' && textStatus !== 'abort' && allowed) {
locationReplace(container.url)
}
}

options.success = function(data, status, xhr) {
var previousState = pjax.state;

// If $.pjax.defaults.version is a function, invoke it first.
// Otherwise it can be a static string.
var currentVersion = (typeof $.pjax.defaults.version === 'function') ?
$.pjax.defaults.version() :
$.pjax.defaults.version

var latestVersion = xhr.getResponseHeader('X-PJAX-Version')

var container = extractContainer(data, xhr, options)

var url = parseURL(container.url)
if (hash) {
url.hash = hash
container.url = url.href
}

// If there is a layout version mismatch, hard load the new url
if (currentVersion && latestVersion && currentVersion !== latestVersion) {
locationReplace(container.url)
return
}

// If the new response is missing a body, hard load the page
if (!container.contents) {
locationReplace(container.url)
return
}

pjax.state = {
id: options.id || uniqueId(),
url: container.url,
title: container.title,
container: context.selector,
fragment: options.fragment,
timeout: options.timeout
}

if (options.push || options.replace) {
window.history.replaceState(pjax.state, container.title, container.url)
}

// Only blur the focus if the focused element is within the container.
var blurFocus = $.contains(options.container, document.activeElement)

// Clear out any focused controls before inserting new page contents.
if (blurFocus) {
try {
document.activeElement.blur()
} catch (e) { }
}

if (container.title) document.title = container.title

fire('pjax:beforeReplace', [container.contents, options], {
state: pjax.state,
previousState: previousState
})
context.html(container.contents)

// 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 = context.find('input[autofocus], textarea[autofocus]').last()[0]
if (autofocusEl && document.activeElement !== autofocusEl) {
autofocusEl.focus();
}

executeScriptTags(container.scripts)

var scrollTo = options.scrollTo

// Ensure browser scrolls to the element referenced by the URL anchor
if (hash) {
var name = decodeURIComponent(hash.slice(1))
var target = document.getElementById(name) || document.getElementsByName(name)[0]
if (target) scrollTo = $(target).offset().top
}

if (typeof scrollTo == 'number') $(window).scrollTop(scrollTo)

fire('pjax:success', [data, status, xhr, options])
}

// Initialize pjax.state for the initial page load. Assume we're
// using the container and options of the link we're loading for the
// back button to the initial page. This ensures good back button
// behavior.
if (!pjax.state) {
pjax.state = {
id: uniqueId(),
url: window.location.href,
title: document.title,
container: context.selector,
fragment: options.fragment,
timeout: options.timeout
}
window.history.replaceState(pjax.state, document.title)
}

// Cancel the current request if we're already pjaxing
abortXHR(pjax.xhr)

pjax.options = options
var xhr = pjax.xhr = $.ajax(options)

if (xhr.readyState > 0) {
if (options.push && !options.replace) {
// Cache current container element before replacing it
cachePush(pjax.state.id, cloneContents(context))

window.history.pushState(null, "", options.requestUrl)
}

fire('pjax:start', [xhr, options])
fire('pjax:send', [xhr, options])
}

return pjax.xhr
}

// Public: Reload current page with pjax.
//
// Returns whatever $.pjax returns.
function pjaxReload(container, options) {
var defaults = {
url: window.location.href,
push: false,
replace: true,
scrollTo: false
}

return pjax($.extend(defaults, optionsFor(container, options)))
}

// Internal: Hard replace current state with url.
//
// Work for around WebKit
//   https://bugs.webkit.org/show_bug.cgi?id=93506 //
// Returns nothing.
function locationReplace(url) {
window.history.replaceState(null, "", pjax.state.url)
window.location.replace(url)
}

var initialPop = true
var initialURL = window.location.href
var initialState = window.history.state

// Initialize $.pjax.state if possible
// Happens when reloading a page and coming forward from a different
// session history.
if (initialState && initialState.container) {
pjax.state = initialState
}

// Non-webkit browsers don't fire an initial popstate event
if ('state' in window.history) {
initialPop = false
}

// popstate handler takes care of the back and forward buttons
//
// You probably shouldn't use pjax on pages with other pushState
// stuff yet.
function onPjaxPopstate(event) {
// Hitting back or forward should override any pending PJAX request.
if (!initialPop) {
abortXHR(pjax.xhr)
}

var previousState = pjax.state
var state = event.state
var direction

if (state && state.container) {
// When coming forward from a separate history session, will get an
// initial pop with a state we are already at. Skip reloading the current
// page.
if (initialPop && initialURL == state.url) return

if (previousState) {
// If popping back to the same state, just skip.
// Could be clicking back from hashchange rather than a pushState.
if (previousState.id === state.id) return

// Since state IDs always increase, we can deduce the navigation direction
direction = previousState.id < state.id ? 'forward' : 'back'
}
//changed by jackchain cancel cache;
var cache = cacheMapping[state.id] || []
//console.log(cache);
var container = $(cache[0] || state.container), contents = cache[1]
//console.log(container);
if (container.length) {
if (previousState) {
// Cache current container before replacement and inform the
// cache which direction the history shifted.
cachePop(direction, previousState.id, cloneContents(container))
}

var popstateEvent = $.Event('pjax:popstate', {
state: state,
direction: direction
})
container.trigger(popstateEvent)

var options = {
id: state.id,
url: state.url,
container: container,
push: false,
fragment: state.fragment,
timeout: state.timeout,
scrollTo: false
}

if (contents) {
container.trigger('pjax:start', [null, options])

pjax.state = state
if (state.title) document.title = state.title
var beforeReplaceEvent = $.Event('pjax:beforeReplace', {
state: state,
previousState: previousState
})
container.trigger(beforeReplaceEvent, [contents, options])
container.html(contents)

container.trigger('pjax:end', [null, options])
} else {
pjax(options)
}

// Force reflow/relayout before the browser tries to restore the
// scroll position.
container[0].offsetHeight
} else {
locationReplace(location.href)
}
}
initialPop = false
}

// Fallback version of main pjax function for browsers that don't
// support pushState.
//
// Returns nothing since it retriggers a hard form submission.
function fallbackPjax(options) {
var url = $.isFunction(options.url) ? options.url() : options.url,
method = options.type ? options.type.toUpperCase() : 'GET'

var form = $('<form>', {
method: method === 'GET' ? 'GET' : 'POST',
action: url,
style: 'display:none'
})

if (method !== 'GET' && method !== 'POST') {
form.append($('<input>', {
type: 'hidden',
name: '_method',
value: method.toLowerCase()
}))
}

var data = options.data
if (typeof data === 'string') {
$.each(data.split('&'), function(index, value) {
var pair = value.split('=')
form.append($('<input>', {type: 'hidden', name: pair[0], value: pair[1]}))
})
} else if ($.isArray(data)) {
$.each(data, function(index, value) {
form.append($('<input>', {type: 'hidden', name: value.name, value: value.value}))
})
} else if (typeof data === 'object') {
var key
for (key in data)
form.append($('<input>', {type: 'hidden', name: key, value: data[key]}))
}

$(document.body).append(form)
form.submit()
}

// Internal: Abort an XmlHttpRequest if it hasn't been completed,
// also removing its event handlers.
function abortXHR(xhr) {
if ( xhr && xhr.readyState < 4) {
xhr.onreadystatechange = $.noop
xhr.abort()
}
}

// Internal: Generate unique id for state object.
//
// Use a timestamp instead of a counter since ids should still be
// unique across page loads.
//
// Returns Number.
function uniqueId() {
return (new Date).getTime()
}

function cloneContents(container) {
var cloned = container.clone()
// Unmark script tags as already being eval'd so they can get executed again
// when restored from cache. HAXX: Uses jQuery internal method.
cloned.find('script').each(function(){
if (!this.src) jQuery._data(this, 'globalEval', false)
})
return [container.selector, cloned.contents()]
}

// Internal: Strip internal query params from parsed URL.
//
// Returns sanitized url.href String.
function stripInternalParams(url) {
url.search = url.search.replace(/([?&])(_pjax|_)=[^&]*/g, '')
return url.href.replace(/\?($|#)/, '$1')
}

// Internal: Parse URL components and returns a Locationish object.
//
// url - String URL
//
// Returns HTMLAnchorElement that acts like Location.
function parseURL(url) {
var a = document.createElement('a')
a.href = url
return a
}

// Internal: Return the `href` component of given URL object with the hash
// portion removed.
//
// location - Location or HTMLAnchorElement
//
// Returns String
function stripHash(location) {
return location.href.replace(/#.*/, '')
}

// Internal: Build options Object for arguments.
//
// For convenience the first parameter can be either the container or
// the options object.
//
// Examples
//
//   optionsFor('#container')
//   // => {container: '#container'}
//
//   optionsFor('#container', {push: true})
//   // => {container: '#container', push: true}
//
//   optionsFor({container: '#container', push: true})
//   // => {container: '#container', push: true}
//
// Returns options Object.
function optionsFor(container, options) {
// Both container and options
if ( container && options )
options.container = container

// First argument is options Object
else if ( $.isPlainObject(container) )
options = container

// Only container
else
options = {container: container}

// Find and validate container
if (options.container)
options.container = findContainerFor(options.container)

return options
}

// Internal: Find container element for a variety of inputs.
//
// Because we can't persist elements using the history API, we must be
// able to find a String selector that will consistently find the Element.
//
// container - A selector String, jQuery object, or DOM Element.
//
// Returns a jQuery object whose context is `document` and has a selector.
function findContainerFor(container) {
container = $(container)

if ( !container.length ) {
throw "no pjax container for " + container.selector
} else if ( container.selector !== '' && container.context === document ) {
return container
} else if ( container.attr('id') ) {
return $('#' + container.attr('id'))
} else {
throw "cant get selector for pjax container!"
}
}

// Internal: Filter and find all elements matching the selector.
//
// Where $.fn.find only matches descendants, findAll will test all the
// top level elements in the jQuery object as well.
//
// elems    - jQuery object of Elements
// selector - String selector to match
//
// Returns a jQuery object.
function findAll(elems, selector) {
return elems.filter(selector).add(elems.find(selector));
}

function parseHTML(html) {
return $.parseHTML(html, document, true)
}

// Internal: Extracts container and metadata from response.
//
// 1. Extracts X-PJAX-URL header if set
// 2. Extracts inline <title> tags
// 3. Builds response Element and extracts fragment if set
//
// data    - String response data
// xhr     - XHR response
// options - pjax options Object
//
// Returns an Object with url, title, and contents keys.
function extractContainer(data, xhr, options) {
var obj = {}, fullDocument = /<html/i.test(data)

// Prefer X-PJAX-URL header if it was set, otherwise fallback to
// using the original requested url.
var serverUrl = xhr.getResponseHeader('X-PJAX-URL')
obj.url = serverUrl ? stripInternalParams(parseURL(serverUrl)) : options.requestUrl

// Attempt to parse response html into elements
if (fullDocument) {
var $head = $(parseHTML(data.match(/<head[^>]*>([\s\S.]*)<\/head>/i)[0]))
var $body = $(parseHTML(data.match(/<body[^>]*>([\s\S.]*)<\/body>/i)[0]))
} else {
var $head = $body = $(parseHTML(data))
}

// If response data is empty, return fast
if ($body.length === 0)
return obj

// If there's a <title> tag in the header, use it as
// the page's title.
obj.title = findAll($head, 'title').last().text()

if (options.fragment) {
// If they specified a fragment, look for it in the response
// and pull it out.
if (options.fragment === 'body') {
var $fragment = $body
} else {
var $fragment = findAll($body, options.fragment).first()
}

if ($fragment.length) {
obj.contents = options.fragment === 'body' ? $fragment : $fragment.contents()

// If there's no title, look for data-title and title attributes
// on the fragment
if (!obj.title)
obj.title = $fragment.attr('title') || $fragment.data('title')
}

} else if (!fullDocument) {
obj.contents = $body
}

// Clean up any <title> tags
if (obj.contents) {
// Remove any parent title elements
obj.contents = obj.contents.not(function() { return $(this).is('title') })

// Then scrub any titles from their descendants
obj.contents.find('title').remove()

// Gather all script[src] elements
//console.log(obj.contents);
//obj.scripts = findAll(obj.contents, 'script[src]').remove()
//console.log(obj.contents);
//console.log(obj.scripts);
//obj.contents = obj.contents.not(obj.scripts)
//console.log(obj.contents);
}

// Trim any whitespace off the title
if (obj.title) obj.title = $.trim(obj.title)

return obj
}

// Load an execute scripts using standard script request.
//
// Avoids jQuery's traditional $.getScript which does a XHR request and
// globalEval.
//
// scripts - jQuery object of script Elements
//
// Returns nothing.
function executeScriptTags(scripts) {
if (!scripts) return

var existingScripts = $('script[src]')
scripts.each(function() {
var src = this.src;
var matchedScripts = existingScripts.filter(function() {
return this.src === src
})
if (matchedScripts.length) return

var script = document.createElement('script')
var type = $(this).attr('type')
if (type) script.type = type
script.src = $(this).attr('src')
document.head.appendChild(script)
})
}

// Internal: History DOM caching class.
var cacheMapping      = {}
var cacheForwardStack = []
var cacheBackStack    = []

// Push previous state id and container contents into the history
// cache. Should be called in conjunction with `pushState` to save the
// previous container contents.
//
// id    - State ID Number
// value - DOM Element to cache
//
// Returns nothing.
function cachePush(id, value) {
cacheMapping[id] = value
cacheBackStack.push(id)

// Remove all entries in forward history stack after pushing a new page.
trimCacheStack(cacheForwardStack, 0)

// Trim back history stack to max cache length.
trimCacheStack(cacheBackStack, pjax.defaults.maxCacheLength)
}

// Shifts cache from directional history cache. Should be
// called on `popstate` with the previous state id and container
// contents.
//
// direction - "forward" or "back" String
// id        - State ID Number
// value     - DOM Element to cache
//
// Returns nothing.
function cachePop(direction, id, value) {
var pushStack, popStack
cacheMapping[id] = value

if (direction === 'forward') {
pushStack = cacheBackStack
popStack  = cacheForwardStack
} else {
pushStack = cacheForwardStack
popStack  = cacheBackStack
}

pushStack.push(id)
if (id = popStack.pop())
delete cacheMapping[id]

// Trim whichever stack we just pushed to to max cache length.
trimCacheStack(pushStack, pjax.defaults.maxCacheLength)
}

// Trim a cache stack (either cacheBackStack or cacheForwardStack) to be no
// longer than the specified length, deleting cached DOM elements as necessary.
//
// stack  - Array of state IDs
// length - Maximum length to trim to
//
// Returns nothing.
function trimCacheStack(stack, length) {
while (stack.length > length)
delete cacheMapping[stack.shift()]
}

// Public: Find version identifier for the initial page load.
//
// Returns String version or undefined.
function findVersion() {
return $('meta').filter(function() {
var name = $(this).attr('http-equiv')
return name && name.toUpperCase() === 'X-PJAX-VERSION'
}).attr('content')
}

// Install pjax functions on $.pjax to enable pushState behavior.
//
// Does nothing if already enabled.
//
// Examples
//
//     $.pjax.enable()
//
// Returns nothing.
function enable() {
$.fn.pjax = fnPjax
$.pjax = pjax
$.pjax.enable = $.noop
$.pjax.disable = disable
$.pjax.click = handleClick
$.pjax.submit = handleSubmit
$.pjax.reload = pjaxReload
$.pjax.defaults = {
timeout: 650,
push: true,
replace: false,
type: 'GET',
dataType: 'html',
scrollTo: 0,
maxCacheLength: 0,
cache:false,//changed by jackchain fire IE cache bug
version: findVersion
}
$(window).on('popstate.pjax', onPjaxPopstate)
}

// Disable pushState behavior.
//
// This is the case when a browser doesn't support pushState. It is
// sometimes useful to disable pushState for debugging on a modern
// browser.
//
// Examples
//
//     $.pjax.disable()
//
// Returns nothing.
function disable() {
$.fn.pjax = function() { return this }
$.pjax = fallbackPjax
$.pjax.enable = enable
$.pjax.disable = $.noop
$.pjax.click = $.noop
$.pjax.submit = $.noop
$.pjax.reload = function() { window.location.reload() }

$(window).off('popstate.pjax', onPjaxPopstate)
}

// Add the state property to jQuery's event object so we can use it in
// $(window).bind('popstate')
if ( $.inArray('state', $.event.props) < 0 )
$.event.props.push('state')

// Is pjax supported by this browser?
$.support.pjax =
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)/)

$.support.pjax ? enable() : disable()

})(jQuery);

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