04. Statements and Code Readability

Statements

When JavaScript interprets your code, it will go through it line by line to execute your code. Each line of execution is known as a statement.

As the proper developer, you should separate each statement with a semicolon.

Code blocks

Statements should be placed in blocks for organization and clarity.

Remember that programming is not just about making things work, but allowing others to read and understand your code. This often means that you should find a good middle-ground between a code's efficiency and readability.

Comment

Every so often you should include comments in JavaScript. This not only allows your colleagues to review your code, but you'll also spend much less time making sense of your own logic when you come back to your code months later.

Comments are also helpful to prevent execution of part of a code when you're trying to debug. Simply comment out the part you don't want to run.

// Comments precede a double slash
/*
Or go between the slash asterick notation like so
*/

White space

When executing statements, JavaScript ignores whitespaces. This means that the following two statements are identical:

var greeting = "Hello";
var greeting="Hello"  ;

It's better to opt for the former, which allows for better readability.

Aching back from coding all day?

Prism Glasses

Aching back from coding all day? Try Back Problems

Ever feel achy from sitting crunched up on your computer table? Try lying down with these optical glasses that allow you to work on your laptop while lying flat on your back. This is the perfect solution with those with limited mobility or those who wish to prevent neck cramps and back strains.

$ Check price
4.454.45Amazon 4 logo(128+ reviews)

More Back Problems resources

Build modern and responsive webpages

High Performance Web Sites

Build modern and responsive webpages Try Front-end

Want your web site to display more quickly? This book presents 14 specific rules that will cut 25% to 50% off response time when users request a page. Author Steve Souders, in his job as Chief Performance Yahoo!, collected these best practices while optimizing some of the most-visited pages on the Web.

$ Check price
29.9929.99Amazon 4.5 logo(63+ reviews)

More Front-end resources

Ad