 |
Related Information
Featured Excerpt
The following excerpt covers "Chapter 4. Variables, Functions, and Operators" from Maintainable JavaScript, written by Nicholas C. Zakas and published by O'Reilly Media, Inc. With the JavaScript practices in this book–including code style, programming tips, and automation–you'll learn how to write maintainable code that other team members can easily understand, adapt, and extend.
Chapter 4: The real guts of any JavaScript program are the functions you write to accomplish tasks. Inside the functions, variables and operators are used to move bits around and make things happen. That's why, after getting the basic formatting of your JavaScript down, it's important to decide how to use functions, variables, and operators to reduce complexity and improve readability.
Variable declarations are accomplished by using the var statement. JavaScript allows the var statement to be used multiple times and nearly anywhere within a script. This usage creates interesting cognitive issues for developers, because all var statements are hoisted to the top of the containing function regardless of where they actually occur in the code.
When did you last use a mobile device such as a smart phone to pay for something in a real storefront?
DevZone
Latest DevZone Articles
The Rise of the Telco as the Ultimate App Digital Storefront—Really
by Trevor Cornwell
In the old days of mobile—five years ago, let’s say—a smart and savvy app developer would make an app and run hard and fast to Samsung, HTC, and Motorola to try to get his app preinstalled on the device. It makes sense: get your app close to where your customer—user—is....
The Future of Money: Web Payments and PaySwarm
by Manu Sporny
Netscape was one of the world's first commercial browser companies. It changed the world by putting powerful technologies in the hands of millions of people. We would later come to know these technologies as the Web. Recently, one of Netscape's founders, Marc Andreessen, has been exploring the idea that software is going to eat the world. His point is that large industries, which have been resistant to change for decades, will find themselves reinvented overnight by small groups of innovative software developers....
The Future of Commerce Will Combine Your Social Network and Mobile Device
by Nick Hughes
Each day we hear growing speculation about the so-called mobile commerce revolution that’s just starting to take shape. Some think NFC payments will be the next big thing in retail. Others believe text-based payments will open up the mobile payment experience for the billions of mobile device holders around the world. And thousands of new apps are created each year with a new twist on using your mobile device to pay for everyday things....
The Mobile Payment Battlefield Is Littered with Players; So Who Will Win?
by Nick Hughes
It's an amazing juxtaposition—we live in such a digitally enhanced world, yet so little progress has occurred in the way we pay for things. MasterCard estimates that 85% of the world's transactions are still conducted with cash. For those counting at home, that amounts to trillions of dollars each year still being exchanged via cash. As we continue to use our mobile devices for more and more daily activities, many wonder when payments will become part of the normal mobile experience....
Decentralized Innovation for Financial Data
by Manu Sporny
In my previous article on Linked Financial Data, I made the case for a universal payment message mechanism built on the concept of Linked Data. To briefly recap, Linked Data is a technology that allows software developers to express complex information about financial objects by using a concept called a Linked Data graph. This graph is capable of representing information in a universal way, allowing the natural merging and reuse of information across the Web....
