JavaScript og WordPress

Jens Ahrengot Boddum

WordPress konsulent

Hvorfor JavaScript?

LocalStorage

Web Sockets

Offline Web Apps

Drag 'n Drop

SessionStorage

Geolocation

File API

Web Audio API

Web RTC

Peer-to-Peer

Canvas

WebGL

Det kommer til at handle om ...

Spagettikode med jQuery

Struktur med genbrugelige moduler

Use case fra den virkelige verden

Asynkron Modul Difinition

"Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling..."
- Backbonejs.org

Hvem bruger Backbone?

 wp_enqueue_script( "backbone" );

Demo time!

codepen.io/Ahrengot/pen/ebyqz

Et eksempel fra

den virkelige verden

http://vimeo.com/58671133


this.presentation.set( "geekMode", true );

Data fra WordPress DB > Backbone

Advanced Custom Fields

<article
    <?php post_class( 'normal untoggled' ); ?>
    data-twitterhandle="<?php the_field( 'twitterfeed_username' ); ?>"
    data-tags="<?php echo implode( '|||', $tags ); ?>"
    data-img-normal="<?php echo $img_normal; ?>"
    data-img-full="<?php $img_full; ?>"
    data-videos="<?php echo implode( '|||', $videos ); ?>"
    data-spotify-tracks="<?php echo implode( '|||', $spotify_tracks ); ?>"
    data-slug="<?php echo basename( get_permalink() ); ?>"
    data-title="<? the_title(); ?>"
    data-permalink="<?php echo get_permalink(); ?>"
    data-comments-open="<?php echo comments_open(); ?>"
>
    <p><?php the_content(); ?></p>
    <ul class="videos"></ul>
    <ul class="spotify-tracks"></ul>
    <ul class="twitterfeed"></ul>
    <ul class="comments"></ul>
</article>

HTML

<article
    class="post-5621 artist untoggled"
    data-twitterhandle="@arcadefire"
    data-tags="alternative|||indie|||rock|||søndag|||green-stage|||20"
    data-img-normal="http://...ArcadeFire_wide_1200x453-460x370.png"
    data-img-full="http://...ArcadeFire_wide_1200x453.png"
    data-videos="7E0fVfectDo|||5Euj9f3gdyM"
    data-spotify-tracks="spotify:track:0UjGKszZwvDrxl0WlAU7Wc"
    data-slug="arcade-fire"
    data-title="Arcade Fire"
    data-permalink="http://www.northside.dk/artist/arcadefire/"
    data-comments-open=""
>
    <p>Koncert beskrivelse bla bla ...</p>
    <ul class="videos"></ul>
    <ul class="spotify-tracks"></ul>
    <ul class="twitterfeed"></ul>
    <ul class="comments"></ul>
</article>

Backbone model

var Toggleable = Backbone.Model.extend({
    initialize: function() {
        this.splitString('videos');
        this.splitString('spotifyTracks');
        this.splitString('tags');
    },
    splitString: function(attr) {
        var data = this.get(attr);
        if (data && typeof data === 'string') {
        this.set(attr, data.split('|||'));
    }
    }
});

Backbone view

`ToggleableView`

var ToggleableView = Backbone.View.extend({
    events: {
        'click': 'toggleOpen'
        'click .close-toggleable': 'toggleClosed'
    },
    initialize: function() {
        this.model.on('change:toggled:true', this.open, this);
        this.model.on('change:toggled:false', this.close, this);
    },
    toggleOpen: function(e) {
        window.location.hash = this.model.get('slug');
    },
    toggleClosed: function(e) {
        ns.toggleRouter.navigate("/", true);
    },
    open: function() {
        this.$el.addClass("toggled");
    },
    close: function() {
        this.$el.removeClass("toggled");
    }
});

northside.dk/kunstnere/ bliver til northside.dk/kunstnere/#/arcade-fire

Backbone view

`ToggleableArtistView`

var ToggleableArtistView = ahrengot.view.ToggleableView.extend({
  open: function() {
    this.updateImage();
    this.$el.addClass('toggled');
    this.createSubViews();
  },
  close: function() {
    this.$el.removeClass('toggled');
    this.updateImage();
  },
  updateImage: function() {
    // Switch large / small image
  },
  createSubViews: function() {
    var $content = this.$el.find('.post_content');

    // Spawn sub views
    if (this.model.get('spotifyTracks')) {
      this.subViews.tracks = new ahrengot.view.SpotifyTracksSection({model: this.model });
      $content.find('.spotify-tracks').html(this.subViews.tracks.el);
    }

    if (this.model.get('videos')) {
      this.subViews.videos = new ahrengot.view.VideoSection({ model: this.model });
      $content.find('.videos').html(this.subViews.videos.el);
    }

    if (this.model.get('twitterhandle')) {
      this.subViews.twitterfeed = new ahrengot.view.TwitterSection({ model: this.model });
      $content.find('.twitterfeed .feed').html(this.subViews.twitterfeed.el);
    }

    if (this.model.get('commentsOpen')) {
      this.subViews.comments = new ahrengot.view.CommentsSection({ model: this.model });
      $content.find('.comments').append(this.subViews.comments.el);
    }
  }
});

Artist Sub-view

`TwitterSection`

var TwitterSection = ahrengot.view.Subsection.extend({
  className: 'feed',
  configureFeed: function() {
    var query = encodeURI("from:" + this.model.get('twitterhandle'));
    this.feed = new TwitterFeed(this.$el, query, 'twitterfeed-artist');
  },
  render: function() {
    this.configureFeed();
  }
});

En bedre måde at
loade scripts I WordPress

`wp_enqueue_script();`

Intet overblik hvis du har meget JS
Mange HTTP requests
Ingen load on-demand

Northside theme med `wp_enqueue_script();`

43 scripts — De afhænger af hinanden på kryds og tværs.

<?php

$cache_bust = '4.3';
$base_url = get_bloginfo( 'template_url' ) . 'library/js/';

wp_enqueue_script( "modernizr", $base_url . 'libs/modernizr-2.6.1.min.js', false, $cache_bust );
wp_enqueue_script( 'jquery' );
wp_enqueue_script( 'underscore' );
wp_enqueue_script( 'backbone' );
wp_enqueue_script( 'isotope', $base_url . 'libs/jquery.isotope.min.js', array( 'jquery' ), $cachebust, true );
wp_enqueue_script( 'namespaces', $base_url . 'Namespaces.js', array(), $cachebust, true );
wp_enqueue_script( 'ctrl-cheesy-tickets', $base_url . 'controllers/CheesyTickets.js', array(), $cachebust, true );
wp_enqueue_script( 'ctrl-facebooksdk', $base_url . 'controllers/FadebookSDK.js', array(), $cachebust, true );
wp_enqueue_script( 'ctrl-factswidget', $base_url . 'controllers/FactsWidget.js', array(), $cachebust, true );
wp_enqueue_script( 'ctrl-faqgui', $base_url . 'controllers/FAQGui.js', array(), $cachebust, true );
wp_enqueue_script( 'ctrl-faqsearchfilter', $base_url . 'controllers/SearchFilter.js', array(), $cachebust, true );
wp_enqueue_script( 'ctrl-fbattendees', $base_url . 'controllers/FBAttendees.js', array(), $cachebust, true );
wp_enqueue_script( 'ctrl-factswidget', $base_url . 'controllers/FactsWidget.js', array(), $cachebust, true );
wp_enqueue_script( 'ctrl-floatingsidebar', $base_url . 'controllers/FloatingSidebar.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-instagramwidget', $base_url . 'controllers/InstagramWidget.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-isotopefilter', $base_url . 'controllers/IsotopeFilter.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-linkhijacker', $base_url . 'controllers/LinkHijacker.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-mobilenavigation', $base_url . 'controllers/MobileNavigation.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-modal', $base_url . 'controllers/Modal.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-newslettersignup', $base_url . 'controllers/NewsletterSignup.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-pumpit', $base_url . 'controllers/PumpIt.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-rightnowwidget', $base_url . 'controllers/RightNowWidget.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-schedulegui', $base_url . 'controllers/ScheduleGui.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-scrollmanager', $base_url . 'controllers/ScrollManager.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-searchfilter', $base_url . 'controllers/SearchFilter.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-slidercontroller', $base_url . 'controllers/SliderController.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-twitterfeed', $base_url . 'controllers/TwitterFeed.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-weatherwidget', $base_url . 'controllers/WeatherWidget.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-widgetbottomlayout', $base_url . 'controllers/WidgetBottomLayout.js', array(), $cache_bust, true );
wp_enqueue_script( 'ctrl-widgetlayout', $base_url . 'controllers/WidgetLayout.js', array(), $cache_bust, true );
wp_enqueue_script( 'model-toggleable', $base_url . 'model/Toggleable.js', array(), $cache_bust, true );
wp_enqueue_script( 'collection-toggleables', $base_url . 'collections/Toggleables.js', array('model-toggleable'), $cache_bust, true );
wp_enqueue_script( 'view-subsection', $base_url . 'views/Subsection.js', array(), $cache_bust, true );
wp_enqueue_script( 'view-submitquestion', $base_url . 'views/SubmitQuestion.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-videosection', $base_url . 'views/VideoSection.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-singlevideosection', $base_url . 'views/SingleVideoSection.js', array('view-videosection'), $cache_bust, true );
wp_enqueue_script( 'view-spotifytrackssection', $base_url . 'views/SpotifyTracksSection.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-twittersection', $base_url . 'views/TwitterSection.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-commentssection', $base_url . 'views/CommentsSection.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-likebtnsection', $base_url . 'views/LikeBtnSection.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-toggleableview', $base_url . 'views/ToggleableView.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-toggleableartist', $base_url . 'views/ToggleableArtist.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-toggleablenews', $base_url . 'views/ToggleableNews.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'view-toggleablevideo', $base_url . 'views/ToggleableVideo.js', array('view-subsection'), $cache_bust, true );
wp_enqueue_script( 'router-togglerouter', $base_url . 'routers/ToggleRouter.js', array('model-toggleable', 'view-toggleable', 'view-toggleableartist', 'view-toggleablenews', 'view-toggleablevider'), $cache_bust, true );
wp_enqueue_script( 'ns-main', $base_url . 'Main.js', array('backbone'), $cachebust, true );

Asynkron Modul Definition
med Require.js

~~Intet~~ Overblik hvis du har meget JS
Loader scripts on-demand
Bedre "responsive design"
Indbygget build script

Resultat: Hurtigere sider

Definér modul

define(["backbone"], function(Backbone) {
  var CustomView = Backbone.View.extend({
    render: function() {
      this.$el.text("Weeeeee!");
    }
  });

  return CustomView;
});

Inkluder modul

require(["sti/til/CustomView"], function(CustomView) {
  new CustomView();
});

`Toggleable.js`

define(["backbone"], function(Backbone) {
  var ToggleableView = Backbone.View.extend({
    // Toggleable methods...
  });
  return ToggleableView;
});

`ToggleableArtist.js`

define(["views/Toggleable", "views/VideoSection", "views/SpotifySection", "views/TwitterfeedSection", "views/CommentsSection"], function(ToggleableView, VideoSection, SpotifySection, TwitterfeedSection, CommentsSection) {
  var ToggleableArtistView = ToggleableView.extend({
    // ToggleableArtist View methods...
  });
  return ToggleableArtistView;
});

`ToggleableNews.js`

define(["views/ToggleableArtist"], function(ToggleableArtistView){
  var ToggleableNewsView = ToggleableArtistView.extend({
    // ToggleableNews methods...
  });
  return ToggleableNewsView;
});

Load af `ToggleableNews.js`

require(["views/toggleableNews"], function(ToggleableNewsView) {
    new ToggleableNewsView();
});

Dynamisk og aynkront indsat i `<head>`

<script async src="sti/til/jquery.js"></script>
<script async src="underscore.js"></script>
<script async src="backbone.js"></script>
<script async src="views/Toggleable.js"></script>
<script async src="views/VideoSection.js"></script>
<script async src="views/SpotifySection.js"></script>
<script async src="views/TwitterfeedSection.js"></script>
<script async src="views/CommentsSection.js"></script>
<script async src="views/ToggleableArtist.js"></script>
<script async src="views/ToggleableNews.js"></script>


this.presentation.set( "geekMode", false );

Jens Ahrengot Boddum

Slides: slides.com/ahrengot/js-og-wp/

Codepen demo: codepen.io/Ahrengot/pen/ebyqz

Mit website: ahrengot.com

Twitter: @Ahrengot

LinkedIn: linkedin.com/in/ahrengot

WordPress og JavaScript

By Jens Ahrengot Boddum

WordPress og JavaScript

(Danish) Bedre JavaScript workflow I WordPress med Backbone og Require.js. WordCamp Denmark d. 25 maj 2014.

5,590

Jens Ahrengot Boddum

I rely on modern technology to design and build mobile-first, highly performant WordPress websites and JavaScript-based applications.

JavaScript og WordPress

Jens Ahrengot Boddum

Hvorfor JavaScript?

Det kommer til at handle om ...

Hvem bruger Backbone?

wp_enqueue_script( "backbone" );

Demo time!

Et eksempel fra

den virkelige verden

Data fra WordPress DB > Backbone

HTML

Backbone model

Backbone view

ToggleableView

Backbone view

ToggleableArtistView

Artist Sub-view

TwitterSection

En bedre måde atloade scripts I WordPress

wp_enqueue_script();

Northside theme med wp_enqueue_script();

43 scripts — De afhænger af hinanden på kryds og tværs.

Asynkron Modul Definitionmed Require.js

Resultat: Hurtigere sider

Definér modul

Inkluder modul

Toggleable.js

ToggleableArtist.js

ToggleableNews.js

Load af ToggleableNews.js

Dynamisk og aynkront indsat i <head>

Jens Ahrengot Boddum

Slides: slides.com/ahrengot/js-og-wp/

Codepen demo: codepen.io/Ahrengot/pen/ebyqz

Mit website: ahrengot.com

Twitter: @Ahrengot

LinkedIn: linkedin.com/in/ahrengot

WordPress og JavaScript

More from Jens Ahrengot Boddum

`wp_enqueue_script( "backbone" );`

`ToggleableView`

`ToggleableArtistView`

`TwitterSection`

En bedre måde at
loade scripts I WordPress

`wp_enqueue_script();`

Northside theme med `wp_enqueue_script();`

Asynkron Modul Definition
med Require.js

`Toggleable.js`

`ToggleableArtist.js`

`ToggleableNews.js`

Load af `ToggleableNews.js`

Dynamisk og aynkront indsat i `<head>`