Future-Proof Responsive Web Design #RWD

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Information about Future-Proof Responsive Web Design #RWD

Published on March 3, 2014

Author: digitalsurgeons

Source: slideshare.net


How can we build experiences for the devices of tomorrow? Explore the techniques for building performant, maintainable and future-proof responsive designs.

Bio: Adam Chambers is a senior developer at Digital Surgeons, a full-service creative agency based in New Haven, Connecticut. Adam is the lead architect on the Gumby Framework project, creator of ResponsiveComments.js and a web standards enthusiast.


ADAM CHAMBERS Senior Developer, Digital Surgeons ! @chambaz digitalsurgeons.com



Desktop Tablet Mobile


Future-proofing Responsive Web Designs. • Elastic layouts • Mobile first • Progressive enhancement • Modular & semantic • Lightweight & performant

Bourbon & Neat

Keep it relative

Elastic Layouts. • Rems Font sizes • Ems Structure, widths, heights, margins, padding •% Structure, widths, heights, margins, padding • Px Sprites, borders, rounded corners

What is an em?

“One em is equal to the computed value of the ‘font-size’ property of the element on which it is used”

What is an em? body { font-size: 100%; } body header { font-size: 2em; } 1em = 16px 1em = 32px 2em = 32px 2em = 64px

Elastic Layouts. • Rems Font sizes • Ems Structure, widths, heights, margins, padding •% Structure, widths, heights, margins, padding • Px Sprites, borders, rounded corners

Why not px?

Why ems?

Absolute Typography. Base font size 16px Base font size 40px

Relative Typography. Base font size 16px Base font size 40px

Absolute / Relative Media Queries. Px base media query Em based media query

Start small

Mobile first. • Often referred to by the misleading term “mobile first” • It’s really just common sense to start small and work up • Mobile browsing is fast overtaking desktop browsing • Forces focus by embracing the constraints of smaller devices • Lets call it “content first”

Min-width Media Queries. Max-width Min-width .responsive-element { padding: 0; @include span-columns(6); .responsive-element { padding: 1em; width: 100%; @include media(min-width: 48em) { padding: 0; @include span-columns(6); } } ! } @include media(max-width: 48em) { padding: 1em; width: 100%; }

From the ground up

Progressive Enhancement. • Progressively enhance rather than gracefully degrading • Starting simple and adding complexity causes far less headaches • Load your advanced features when supported • Just like our layouts, our functionality can grow and not shrink • Lets call it “content first”

Progressive Enhancement. Cutting the mustard Progressive Enhancement // cutting the mustard if(‘querySelector’ in document && ‘localStorage’ in window && ‘addEventListener’ in window) { if(Modernizr.webp) { // use webp images } else if(Modernizr.svg) { // ok use sag then } ! } // all the things ! if(Modernizr.geolocation) { // geolocation wizardry } ! if(window.matchMedia(‘min-width: 48em’).matches) { // all the things }

<!–– ResponsiveComments.com ––>

Modular & meaningful

Sassy Modularity. • I’m sure we all agree that modularity is essential • Maintainability is essential in future proof applications • Placeholders are invisible, reusable blocks of CSS • Extend placeholders into classes for performant modularity • Sass allows us to create semantic, content driven classes

Modular CSS. HTML CSS .product { width: 25%; padding: 2em; float: left; } .featured { width: red; } <div class=“product”> <!-— product markup —-> </div> ! <div class=“product featured”> <!-— featured product markup —-> </div>

Modular Sass. SCSS %product { width: 25%; padding: 2em; float: left; } ! %featured { background: red; } HTML .product { @extend %product; } <div class=“product”> <!-— product markup —-> </div> ! ! .featured-product { @extend %product; @extend %featured; } <div class=“featured-product”> <!-— featured product markup —-> </div>

Modular Sass. SCSS CSS %title { text-transform: uppercase; line-height: 3; color: #000; } .product-title, .cart-title { text-transform: uppercase; line-height: 3; color: #000; } ! .product-title { margin: 20px 0; @extend %title; } ! ! ! .cart-title { float: right; @extend %title; } .cart-title { float: right; } .product-title { margin: 20px 0; }

Light & fast

Monolithic Frameworks. • Frameworks are essential for rapid development • Providing building blocks for your application • Large overhead and code bloat • Pick and choose exactly what you require

Mixins. • Mixins are invisible, reusable blocks of CSS • Arguments and conditional logic • Mixin libraries have no overhead • Only use exactly what you require

Mixin Libraries. .product { @include span-columns(4); } ! %outer-container { @include outer-container(); } ! .product-container { @extend %outer-container; } @mixin btn($color) { @extend %btn; background-color: $color; } ! .product-btn { @include btn(#c0392b); } ! .delete-btn { @include btn(#d54445); }

jQuery. • jQuery is a fantastic library for cross browser development • Do you really need the entire 100kb? • Not just page weight but call stack size • Native JavaScript support is actually pretty good

Vanilla JS. var products = document.querySelectorAll(‘.product’); ! var featuredProduct = document.querySelector(‘.featured-product’); ! [].forEach.call(products, function(product) { // do something with each product }); ! featuredProduct.classList.add(‘active’); featuredProduct.classList.remove(‘active’); featuredProduct.classList.contains(‘active’);

Bower. • Dependency management for the front end • Micro-libraries over monolithic frameworks • Small libraries that serve a single purpose • Pick and choose exactly what you require

Bower.json { "name": "Digital Surgeons", "version": "1.0.0", "private": true, "dependencies": { "normalize-scss": "~2.1.3", "responsive-comments": "~1.2.1", "html5-polyfills": "*", "matchmedia": "~0.1.0", "headroom.js": "~0.3.9", "raf.js": "~0.0.3", "respond": "~1.4.2", "html5shiv": "~3.7.0", "slider": "https://github.com/cferdinandi/slider.git", "swiper": "~2.4.3", "move.js": "https://github.com/visionmedia/move.js.git#~0.3.3", "imagesloaded": "~3.1.4" } }

Grunt. • Task runner and build processes for the front end • Package your front end code for production • Compile, minify, concatenate, optimise • If at all possible, automate it

Gruntfile.js files: { // global JS ‘js/dist/global.js’: [ ‘bower_components/raf.js/raf.min.js’, ‘bower_components/html5-polyfills/classList.js’, ‘bower_components/responsive-comments/responsive-comments.js’, ‘bower_components/anim/anim.min.js’, ‘bower_components/headroom.js/dist/headroom.js’, ‘js/src/global.js’ ], // global JS + page specific ‘js/dist/home.js’: [ ‘bower_components/swiper/dist/idangerous.swiper.js’, ‘bower_components/eventEmitter/EventEmitter.min.js’, ‘bower_components/eventie/eventie.js’, ‘bower_components/imagesloaded/imagesloaded.js’, ‘js/dist/global.js’, ‘js/src/slider.js’, ‘js/src/home.js’ ] } watch: { scripts: { files: [‘js/src/*.js’], tasks: [‘uglify’], options: { spawn: false, livereload: true } }, css: { files: ‘sass/*.scss’, tasks: [‘sass’], options: { livereload: true, } } }

#perfmatters. • Performance is no longer just load time, it’s a feature • Rendering performance is essential in a world of client side apps • Use Chrome’s extensive Dev Tools to profile and optimise • Make your application run fast and smoothly over time

Rendering Performance.

Painting Performance.

Future-proofing Responsive Web Designs. • Elastic layouts • Mobile first • Progressive enhancement • Modular & semantic • Lightweight & performant

“Amazing last quote with something meaningful and memorable.” #perfmatters

FUTURE-PROOF RWD Follow me @chambaz digitalsurgeons.com

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