JavaScript™ 1.5 by Example

Types of Bugs

Just like the real world, which has many species of creepy-crawlies, the computer world has many types of computer bugs. There are, in fact, a few different “species” of computer bugs. Some of the most common are

• Syntax errors

• Runtime errors

• Logic errors

• Incorrect use of operator precedence

Let's take a look at what each of these means.

Introducing Syntax Errors

Syntax errors are the most common type of error programmers come across. Syntax is the rules of grammar and spelling for a computer language, and, because computers are more picky about language than we humans, you need to be very careful when communicating with them. You have to learn to obey their rules. This means, for instance, that when you use a string, you must enclose ...