Jquery. Best practices – Presentation – About speaker

View Github Repository Open presentation in a new window

Leefrost

See all presentation from Leefrost

Jquery. Best practices – Presentation – About speaker

0 0

Presentations

Meetup presentations

On Github Leefrost / Presentations

Jquery. Best practices

Presentation

Created by Sergii aka Leefrost Lischuk / @leefrost_

About speaker

Sergii Lischuk

  • Working at Clarity AG
  • Soon-to-be a blogger
  • Hate world of HTML 5

Contact

  • Github: Leefrost_
  • Twitter: @leefrost
  • Facebook: Sergii Lischuk

Why do people us Jquery?

  • Simple operations with DOM becoming too dangerous and harmful voyage
  • Ajax and JSONP are suck without it
  • Utility functions are cool
  • Deferreds / Promisess are awensome
  • Understandeble, have great community and lot of documentation

Who else use Jquery?

  • Backbone.js
  • Twitter Bootstrap
  • Jquery mobile
  • Github, Microsoft, Facebook etc.

So lets start...

Ready event

Most projects start like this: 
							
$(document).ready(function(){
	//I am ready for everything....
	//Assign any event / data for me
})
...or use simpler version... 
							
$(function(){
	//This notation is much better..
})

All above are fine if:

  • You dont care about performance
  • You dont care about best practices
  • You dont care about enviropment

Solution? - This way 

							
//use IIFE
(function($, window, document){

	//$ - is now locally scoped

	$(function(){
		//listen only on Jquery ready event
	})

	//rest of code...
})(window.JQuery, window, document)

DOM manipulation

Most projects do this:

							
//"runtime" data for attribute
$(".some-class input#element").attr("title", $(".other-class input#title").val());

//set's an element's text color to red
$(".some-class input#element").css("color", "red");

//makes the element fade out
$(".some-class input#element").fadeOut();

This is fine if:

  • You dont care about best practices
  • You dont care about performance
  • You like to repeat yourself

Solution? - this way 

							
//"runtime" data for attribute
$("#element").attr("title", $("#title").val());

//set's an element's text color to red
$("#element").css("color", "red");

//makes the element fade out
$("#element").fadeOut();

Simplify your elements

This is best: 

							
var elem = $("#element");
//"runtime" data for attribute
elem.attr("title", $("#title").val());

//set's an element's text color to red
elem.css("color", "red");

//makes the element fade out
elem.fadeOut();

...or shorter version...

							
var elem = $("#element");
elem.attr("title", $("#title").val()).css("color", "red").fadeOut();

Chaining

Vertical Slides

Slides can be nested inside of each other.

Use the Space key to navigate through all slides.

Basement Level 1

Nested slides are useful for adding additional detail underneath a high level horizontal slide.

Basement Level 2

That's it, time to go back up.

Slides

Not a coder? Not a problem. There's a fully-featured visual editor for authoring these, try it out at http://slides.com.

Point of View

Press ESC to enter the slide overview.

Hold down alt and click on any element to zoom in on it using zoom.js. Alt + click anywhere to zoom back out.

Touch Optimized

Presentations look great on touch devices, like mobile phones and tablets. Simply swipe through your slides.

Markdown support

Write content using inline or external Markdown. Instructions and more info available in the readme.

<section data-markdown>
  ## Markdown support

  Write content using inline or external Markdown.
  Instructions and more info available in the [readme](https://github.com/hakimel/reveal.js#markdown).
</section>

Fragments

Hit the next arrow...

... to step through ...

... a fragmented slide.

This slide has fragments which are also stepped through in the notes window.

Fragment Styles

There's different types of fragments, like:

grow

shrink

fade-out

current-visible

highlight-red

highlight-blue

Transition Styles

You can select from different transitions, like: None - Fade - Slide - Convex - Concave - Zoom

Themes

reveal.js comes with a few themes built in: Black (default) - White - League - Sky - Beige - Simple Serif - Blood - Night - Moon - Solarized

Slide Backgrounds

Set data-background="#dddddd" on a slide to change the background color. All CSS color formats are supported.

Image Backgrounds

<section data-background="image.png">

Tiled Backgrounds

<section data-background="image.png" data-background-repeat="repeat" data-background-size="100px">

Video Backgrounds

<section data-background-video="video.mp4,video.webm">

... and GIFs!

Background Transitions

Different background transitions are available via the backgroundTransition option. This one's called "zoom". 

Reveal.configure({ backgroundTransition: 'zoom' })

Background Transitions

You can override background transitions per-slide. 

<section data-background-transition="zoom">

Pretty Code

function linkify( selector ) {
  if( supports3DTransforms ) {

    var nodes = document.querySelectorAll( selector );

    for( var i = 0, len = nodes.length; i < len; i++ ) {
      var node = nodes[i];

      if( !node.className ) {
        node.className += ' roll';
      }
    }
  }
}

Code syntax highlighting courtesy of highlight.js.

Marvelous List

  • No order here
  • Or here
  • Or here
  • Or here

Fantastic Ordered List

One is smaller than... Two is smaller than... Three!

Tabular Tables

Item Value Quantity Apples $1 7 Lemonade $2 18 Bread $3 2

Clever Quotes

These guys come in two forms, inline: “The nice thing about standards is that there are so many to choose from” and block:

“For years there has been a theory that millions of monkeys typing at random on millions of typewriters would reproduce the entire works of Shakespeare. The Internet has proven this theory to be untrue.”

Intergalactic Interconnections

You can link between slides internally, like this.

Speaker View

There's a speaker view. It includes a timer, preview of the upcoming slide as well as your speaker notes.

Press the S key to try it out.

Oh hey, these are some notes. They'll be hidden in your presentation, but you can see them if you open the speaker notes window (hit 's' on your keyboard).

Export to PDF

Presentations can be exported to PDF, here's an example:

Global State

Set data-state="something" on a slide and "something" will be added as a class to the document element when the slide is open. This lets you apply broader style changes, like switching the page background.

State Events

Additionally custom events can be triggered on a per slide basis by binding to the data-state name. 

Reveal.addEventListener( 'customevent', function() {
	console.log( '"customevent" has fired' );
} );

Take a Moment

Press B or . on your keyboard to pause the presentation. This is helpful when you're on stage and want to take distracting slides off the screen.

Much more

THE END

- Try the online editor - Source code & documentation

Jquery. Best practices Presentation Created by Sergii aka Leefrost Lischuk / @leefrost_