Building Polyfills by Brandon Satrom

By Brandon Satrom

Add customized positive factors to browsers outdated and new by way of writing polyfill libraries, JavaScript plugins that take browsers past their local functions. during this functional fieldbook, writer Brandon Satrom introduces ideas and guidance for polyfill improvement, after which walks you thru the stairs for development a posh, real-world HTML5 polyfill.

You’ll additionally discover the way forward for polyfilling—or prollyfilling—that will make it easier to attempt and paintings with rising options, frequently sooner than browser proprietors. by the point you end this publication, you’ll have the instruments and hands-on adventure you must construct trustworthy polyfills for today’s and tomorrow’s net.

  • Learn the present country of polyfills, together with shims, opt-ins, and drop-ins
  • Use rules and practices to construct in charge polyfills that profit the complete internet improvement neighborhood
  • Build out numerous gains for an HTML5 kinds polyfill library
  • Configure a construct atmosphere and run computerized cross-browser checking out
  • Optimize functionality, deal with side instances, and fine-tune the rate of your polyfill
  • Get examples of prollyfilling libraries that push the bounds of the net
  • Write a pattern prollyfill and examine it to present polyfill builds

Show description

Read Online or Download Building Polyfills PDF

Best javascript books

Beginning Android Web Apps Development: Develop for Android using HTML5, CSS3, and JavaScript

With starting Android net Apps improvement, you'll how one can follow HTML5, CSS3, JavaScript, Ajax and different net criteria to be used at the Android cellular platform, by means of development various enjoyable and visually stimulating video games and different internet purposes! If you've performed a few simple net improvement, and you are looking to construct your talents to create exceptional web apps, you'll find everything you search within the discussions and examples during this e-book.

Getting Started with Grunt: The JavaScript Task Runner

A hands-on method of studying the basics of Grunt


Gain perception at the middle suggestions of Grunt, Node. js and npm to start with Grunt.
Learn tips on how to set up, configure, run, and customise Grunt
Example-driven and jam-packed with the way to assist you create customized Grunt initiatives

In aspect

In fresh occasions, smooth net browsers became the applying platform of selection. Grunt, in addition to its wide variety of plugins, presents an easy means of coping with the big variety of construct initiatives required to keep up a worldly internet application.
Getting begun with Grunt: The JavaScript job Runner provide you with the entire info you must develop into a good Grunt power-user. you are going to fast the best way to set up, configure, and run Grunt. you'll move directly to know how to exploit third-party Grunt after which create your personal Grunt projects that cater on your specific needs.
This publication first demonstrates numerous Grunt use instances prior to working throughout the steps of putting in, configuring, working, and customizing Grunt. you are going to how to set up Node. js, the Node. js package deal supervisor (npm), and Grunt. Then, you are going to know the way to establish and configure a personalised Grunt surroundings. subsequent, you are going to examine a number of the tools of operating and customizing Grunt to make use of its flexibility. eventually, to emphasize what has been learnt, you will see that an entire instance construct of an online application.
Getting all started with Grunt: The JavaScript job Runner will aid you create your personal Grunt environments from scratch and completely make the most of Grunt's huge characteristic set to successfully clear up your customized requirements.
What you'll research from this book
Learn approximately Grunt and its advantages
Understand Node. js and the way it pertains to Grunt
Take an in-depth examine npm, Node. js modules, and the operating of Grunt plugins
Get acquainted with fitting Grunt and constructing your first Grunt construct environment
Gain perception at the tools of configuring Grunt and while every one strategy may be used
Effectively execute Grunt by utilizing activity arguments, activity aliasing, multi-task pursuits, and more
Construct your personal Grunt initiatives, multi-tasks, and asynchronous projects


A step by step, useful educational that can assist you rework right into a Grunt power-user.

Who this publication is written for

This booklet is for JavaScript builders who are looking to become familiar with GruntJS and use it to construct and attempt their JavaScript functions. the single requirement for this e-book is a easy realizing of items and features in JavaScript.

.net (September 2015)

. internet is the world's best-selling journal for internet designers and builders. each factor boasts pages of tutorials overlaying themes reminiscent of CSS, Hypertext Preprocessor, Flash, JavaScript, HTML5 and net photographs written by means of a number of the world’s most beneficial internet designers and artistic layout organizations. Interviews, gains and professional advice additionally provide recommendation on search engine marketing, social media advertising and marketing, hosting, the cloud, cellular improvement and apps, making it the basic consultant for useful website design.

Learning Web Development with React and Bootstrap

Construct real-time responsive net apps utilizing React and Bootstrap
About This Book
Showcase the ability of React-Bootstrap via real-world examples
Explore some great benefits of integrating React with numerous frameworks and APIs
See the advantages of utilizing the most recent frameworks to make your internet improvement event enchanting
Who This booklet Is For
This publication is for anyone who's drawn to glossy net improvement and has intermediate wisdom of HTML, CSS, and JavaScript. simple wisdom of any JavaScript MVC framework could even be helpful.
What you are going to Learn
See the best way to combine Bootstrap with ReactExplore the Redux structure and comprehend its benefits
Build a customized responsive subject with React-Bootstrap components
Easily engage with DOM in your net browser
Appreciate some great benefits of utilizing JSX
Get familiar with some of the routing tools in React
Integrate exterior APIs into React
In Detail
Bootstrap is without doubt one of the hottest front-end frameworks, and integrating it with React permits net builders to jot down a lot purifier code. This booklet may help you achieve an intensive figuring out of the Bootstrap framework and aid you construct striking net apps.
In this publication, you'll get an summary of the beneficial properties of Bootstrap and ReactJS, in addition to the mixing of React-Bootstrap elements with ReactJS. you are going to comprehend some great benefits of utilizing JSX and the Redux structure. The server-side rendering of React can be proven. all of the techniques are defined by way of constructing real-world examples.
By the tip of this e-book, you may be outfitted to create responsive internet purposes utilizing Bootstrap variety and React-Bootstrap elements with ReactJS, and should have an perception into the simplest practices.
Style and approach
The venture is that will help you make a dwell and fully-responsive net program utilizing React-Bootstrap with hands-on examples and step by step directions. This booklet is linear in addition to innovative, so each bankruptcy builds upon the data won within the final.

Additional info for Building Polyfills

Example text

Example 3-1. kendoForm(); Example 3-2. body); To support both of these approaches in my polyfill, I’ll need to follow Kendo UI’s rec‐ ommended approach for creating custom widgets. First, I’ll create the core source file for my polyfill in the src/ folder for my project. js, which follows a naming convention similar to other Kendo UI source files. Then, in my new source file, I’ll include the code in Example 3-3. Example 3-3. Form). kendoForm. plugin(Form); } (jQuery, kendo)); As illustrated here, my polyfill starts with an Immediately-Invoked Function Expres‐ sion (IIFE) that specifies my dependencies (jQuery and Kendo UI in this case).

Much like my four-yearold needs to be reminded that eating vegetables is important, I have to be reminded from time to time that specifications are very useful, even to us lowly web developers. For the polyfill developer, reading and understanding a specification is almost as im‐ portant as it is to browser implementers themselves. As we’ll discuss in the next prin‐ ciple, reading the spec is the best way to understand what your polyfill needs to provide and thus is essential. It’s the most rule-like of all these principles, but also the most important.

In this chapter, I’m going to walk through some practical steps for building cross-browser polyfills via an actual, realworld project that I created. We won’t go through every line of code or every excruciating detail, but I will introduce you to some practical examples and considerations that you’ll want to keep in mind for your own polyfill development, no matter the web platform feature being targeted. We’ll start with a discussion on project setup and structure before diving into setting up your API and deciding what you plan to build and not to build.

Download PDF sample

Rated 4.62 of 5 – based on 32 votes