• Stars
    star
    16,740
  • Rank 1,664 (Top 0.04 %)
  • Language
    JavaScript
  • License
    MIT License
  • Created over 13 years ago
  • Updated almost 2 years ago

Reviews

There are no reviews yet. Be the first to send feedback to the community and the maintainers!

Repository Details

pushState + ajax = pjax

pjax = pushState + ajax

pjax is a jQuery plugin that uses ajax and pushState to deliver a fast browsing experience with real permalinks, page titles, and a working back button.

pjax works by fetching HTML from your server via ajax and replacing the content of a container element on your page with the loaded HTML. It then updates the current URL in the browser using pushState. This results in faster page navigation for two reasons:

  • No page resources (JS, CSS) get re-executed or re-applied;
  • If the server is configured for pjax, it can render only partial page contents and thus avoid the potentially costly full layout render.

Status of this project

jquery-pjax is largely unmaintained at this point. It might continue to receive important bug fixes, but its feature set is frozen and it's unlikely that it will get new features or enhancements.

Installation

pjax depends on jQuery 1.8 or higher.

npm

$ npm install jquery-pjax

standalone script

Download and include jquery.pjax.js in your web page:

curl -LO https://raw.github.com/defunkt/jquery-pjax/master/jquery.pjax.js

Usage

$.fn.pjax

The simplest and most common use of pjax looks like this:

$(document).pjax('a', '#pjax-container')

This will enable pjax on all links on the page and designate the container as #pjax-container.

If you are migrating an existing site, you probably don't want to enable pjax everywhere just yet. Instead of using a global selector like a, try annotating pjaxable links with data-pjax, then use 'a[data-pjax]' as your selector. Or, try this selector that matches any <a data-pjax href=> links inside a <div data-pjax> container:

$(document).pjax('[data-pjax] a, a[data-pjax]', '#pjax-container')

Server-side configuration

Ideally, your server should detect pjax requests by looking at the special X-PJAX HTTP header, and render only the HTML meant to replace the contents of the container element (#pjax-container in our example) without the rest of the page layout. Here is an example of how this might be done in Ruby on Rails:

def index
  if request.headers['X-PJAX']
    render :layout => false
  end
end

If you'd like a more automatic solution than pjax for Rails check out Turbolinks.

Check if there is a pjax plugin for your favorite server framework.

Also check out RailsCasts #294: Playing with PJAX.

Arguments

The synopsis for the $.fn.pjax function is:

$(document).pjax(selector, [container], options)
  1. selector is a string to be used for click event delegation.
  2. container is a string selector that uniquely identifies the pjax container.
  3. options is an object with keys described below.
pjax options
key default description
timeout 650 ajax timeout in milliseconds after which a full refresh is forced
push true use pushState to add a browser history entry upon navigation
replace false replace URL without adding browser history entry
maxCacheLength 20 maximum cache size for previous container contents
version a string or function returning the current pjax version
scrollTo 0 vertical position to scroll to after navigation. To avoid changing scroll position, pass false.
type "GET" see $.ajax
dataType "html" see $.ajax
container CSS selector for the element where content should be replaced
url link.href a string or function that returns the URL for the ajax request
target link eventually the relatedTarget value for pjax events
fragment CSS selector for the fragment to extract from ajax response

You can change the defaults globally by writing to the $.pjax.defaults object:

$.pjax.defaults.timeout = 1200

$.pjax.click

This is a lower level function used by $.fn.pjax itself. It allows you to get a little more control over the pjax event handling.

This example uses the current click context to set an ancestor element as the container:

if ($.support.pjax) {
  $(document).on('click', 'a[data-pjax]', function(event) {
    var container = $(this).closest('[data-pjax-container]')
    var containerSelector = '#' + container.id
    $.pjax.click(event, {container: containerSelector})
  })
}

NOTE Use the explicit $.support.pjax guard. We aren't using $.fn.pjax so we should avoid binding this event handler unless the browser is actually going to use pjax.

$.pjax.submit

Submits a form via pjax.

$(document).on('submit', 'form[data-pjax]', function(event) {
  $.pjax.submit(event, '#pjax-container')
})

$.pjax.reload

Initiates a request for the current URL to the server using pjax mechanism and replaces the container with the response. Does not add a browser history entry.

$.pjax.reload('#pjax-container', options)

$.pjax

Manual pjax invocation. Used mainly when you want to start a pjax request in a handler that didn't originate from a click. If you can get access to a click event, consider $.pjax.click(event) instead.

function applyFilters() {
  var url = urlForFilters()
  $.pjax({url: url, container: '#pjax-container'})
}

Events

All pjax events except pjax:click & pjax:clicked are fired from the pjax container element.

event cancel arguments notes
event lifecycle upon following a pjaxed link
pjax:click ✔︎ options fires from a link that got activated; cancel to prevent pjax
pjax:beforeSend ✔︎ xhr, options can set XHR headers
pjax:start xhr, options
pjax:send xhr, options
pjax:clicked options fires after pjax has started from a link that got clicked
pjax:beforeReplace contents, options before replacing HTML with content loaded from the server
pjax:success data, status, xhr, options after replacing HTML content loaded from the server
pjax:timeout ✔︎ xhr, options fires after options.timeout; will hard refresh unless canceled
pjax:error ✔︎ xhr, textStatus, error, options on ajax error; will hard refresh unless canceled
pjax:complete xhr, textStatus, options always fires after ajax, regardless of result
pjax:end xhr, options
event lifecycle on browser Back/Forward navigation
pjax:popstate event direction property: "back"/"forward"
pjax:start null, options before replacing content
pjax:beforeReplace contents, options right before replacing HTML with content from cache
pjax:end null, options after replacing content

pjax:send & pjax:complete are a good pair of events to use if you are implementing a loading indicator. They'll only be triggered if an actual XHR request is made, not if the content is loaded from cache:

$(document).on('pjax:send', function() {
  $('#loading').show()
})
$(document).on('pjax:complete', function() {
  $('#loading').hide()
})

An example of canceling a pjax:timeout event would be to disable the fallback timeout behavior if a spinner is being shown:

$(document).on('pjax:timeout', function(event) {
  // Prevent default timeout redirection behavior
  event.preventDefault()
})

Advanced configuration

Reinitializing plugins/widget on new page content

The whole point of pjax is that it fetches and inserts new content without refreshing the page. However, other jQuery plugins or libraries that are set to react on page loaded event (such as DOMContentLoaded) will not pick up on these changes. Therefore, it's usually a good idea to configure these plugins to reinitialize in the scope of the updated page content. This can be done like so:

$(document).on('ready pjax:end', function(event) {
  $(event.target).initializeMyPlugin()
})

This will make $.fn.initializeMyPlugin() be called at the document level on normal page load, and on the container level after any pjax navigation (either after clicking on a link or going Back in the browser).

Response types that force a reload

By default, pjax will force a full reload of the page if it receives one of the following responses from the server:

  • Page content that includes <html> when fragment selector wasn't explicitly configured. Pjax presumes that the server's response hasn't been properly configured for pjax. If fragment pjax option is given, pjax will extract the content based on that selector.

  • Page content that is blank. Pjax assumes that the server is unable to deliver proper pjax contents.

  • HTTP response code that is 4xx or 5xx, indicating some server error.

Affecting the browser URL

If the server needs to affect the URL which will appear in the browser URL after pjax navigation (like HTTP redirects work for normal requests), it can set the X-PJAX-URL header:

def index
  request.headers['X-PJAX-URL'] = "http://example.com/hello"
end

Layout Reloading

Layouts can be forced to do a hard reload when assets or html changes.

First set the initial layout version in your header with a custom meta tag.

<meta http-equiv="x-pjax-version" content="v123">

Then from the server side, set the X-PJAX-Version header to the same.

if request.headers['X-PJAX']
  response.headers['X-PJAX-Version'] = "v123"
end

Deploying a deploy, bumping the version constant to force clients to do a full reload the next request getting the new layout and assets.

More Repositories

1

gist

Potentially the best command line gister.
Ruby
3,805
star
2

dotjs

~/.js
Ruby
3,161
star
3

facebox

Facebook-style lightbox, built in jQuery
JavaScript
1,928
star
4

unicorn

Unofficial Unicorn Mirror.
Ruby
1,410
star
5

pystache

Mustache in Python
Python
1,308
star
6

github-gem

`github` command line helper for simplifying your GitHub experience.
Ruby
1,123
star
7

cijoe

CI Joe is a fun Continuous Integration server. Unmaintained.
Ruby
1,046
star
8

coffee-mode

Emacs Major Mode for CoffeeScript
Emacs Lisp
574
star
9

gist.el

Yet another Emacs paste mode, this one for Gist.
Emacs Lisp
548
star
10

hurl

Hurl makes HTTP requests.
JavaScript
529
star
11

rip

Take back your $LOAD_PATH. Deprecated and unmaintained.
Ruby
363
star
12

repl

Sometimes you need a REPL. Unmaintained, sorry.
Ruby
360
star
13

textmate.el

Basic emulation of awesome TextMate features for Emacs.
Emacs Lisp
356
star
14

colored

Colors in your terminal. Unmaintained.
Ruby
270
star
15

cache_fu

Ghost from Christmas past. Unmaintained.
Ruby
257
star
16

exception_logger

Unmaintained. Sorry.
Ruby
242
star
17

cheat

Cheating is fun!
Ruby
239
star
18

Zen

Distraction free writing for Atom.
CoffeeScript
193
star
19

emacs

My Emacs config
Emacs Lisp
187
star
20

choice

Choice is a gem for defining and parsing command line options with a friendly DSL.
Ruby
176
star
21

ambition

include Enumerable — Unmaintained
Ruby
165
star
22

markdown-mode

Emacs Markdown mode
Emacs Lisp
155
star
23

lyndon

Lyndon wraps JavaScript in a loving MacRuby embrace. A fun hack that is no longer maintained.
Ruby
145
star
24

nginx_config_generator

Generates nginx config files from YAML.
Ruby
125
star
25

acts_as_textiled

Makes your models act as textiled.
Ruby
115
star
26

resque-lock

A Resque plugin for ensuring only one instance of your job is running at a time.
Ruby
113
star
27

mofo

Mofo was a fast and simple microformat parser, based on a concise DSL and Hpricot. No longer maintained.
JavaScript
91
star
28

gem-man

RubyGems plugin to view a gem's manpage.
Ruby
85
star
29

quake

The source code to Quake, one of the best games ever.
79
star
30

mustache-sinatra-example

An example of using Mustache in a Sinatra app.
Ruby
79
star
31

defunkt.github.com

My GitHub Page
HTML
78
star
32

sake

System wide Rake.
Ruby
76
star
33

starling

Ruby
74
star
34

resque

Moved to resque/resque
57
star
35

ircamp

IRC <-> Campfire Bridge
Python
54
star
36

evilbot

an evil bot that's definitely not for convore
CoffeeScript
50
star
37

jasper

Lispy JavaScript
JavaScript
40
star
38

gibberish

Dead simple Rails localization.
Ruby
37
star
39

Mustache.tmbundle

A little textmate bundle for defunkt/mustache
36
star
40

resque-web

Sinatra-based web UI for Resque
Ruby
30
star
41

ike

Rake in Io.
Io
28
star
42

mapreducerb

Simple map/reduce in Ruby
Ruby
26
star
43

sake-tasks

Your own personal sake tasks, ripe for sharing.
25
star
44

matzbot

matzbot is nice so we are nice
Ruby
22
star
45

mustache-syntax-highlighter

Syntax highlighting plugin for mustache.rb
Ruby
22
star
46

repl-completion

Completion files for repl(1)
22
star
47

sfruby-meetup-resque

My Resque presentation at the SF Ruby Meetup, January 2010
Ruby
21
star
48

ftpd.rb

A simple ftp daemon, written in Ruby. Do not use — here for historical purposes.
Ruby
19
star
49

zippy

Zippy lil’ zipcode lib.
Ruby
18
star
50

subtlety

Subtlety: SVN => RSS, hAtom => Atom
Ruby
16
star
51

ambitious_activerecord

Unmaintained Ambitious ActiveRecord adapter, for Ambition.
Ruby
15
star
52

cheat.el

Cheat Emacs mode
Emacs Lisp
15
star
53

fixture_scenarios_builder

Build your fixtures in Ruby.
Ruby
15
star
54

resque-cli

A command line program for talking to Resque.
15
star
55

iui

Import of the iui library
JavaScript
14
star
56

ambitious_activeldap

Ambition adapter for ActiveLdap
Ruby
13
star
57

dodgeball.github.com

yes
Ruby
12
star
58

ooc-markdown

A Discount binding for ooc
C
12
star
59

pinder

My fork of Pinder, the Campfire API for Python developers.
Python
10
star
60

sdoc-helpers

Simple helpers to make using sdoc easier.
Ruby
10
star
61

metaid

10
star
62

Markdown-problems

Public repository to submit markdown problems to github support
9
star
63

currency_converter

Objective-C
9
star
64

magit

Mirror of the Magit Emacs mode.
Emacs Lisp
8
star
65

burn

Sinatra => Campfire
7
star
66

my-awesome-framework

A simple demonstration of how to effectively use Git submodules.
7
star
67

repo-in-a-repo

7
star
68

sakerb

Sake repository served fresh by the guys at Barefoot.
Ruby
7
star
69

barefootexamples

Ruby
7
star
70

ozimodo

An ancient Ruby on Rails powered tumblelog.
7
star
71

electron-wordwrap

7
star
72

redis-namespace

Moved to resque/redis-namespace
6
star
73

rtimeout

Ruby
6
star
74

lacampfire

Logical Awesome Campfire userscript.
JavaScript
6
star
75

my-fun-repo

5
star
76

my-fantastic-plugin

A simple demonstration of how to effectively use Git submodules.
5
star
77

github-markup

Moved!
5
star