Grammar rules

Just like with any other programming language, JavaScript has grammar rules that are to be followed in order for the computer to understand what our code is trying to tell it. These rules are fairly straightforward and range from capitalizing and punctuating your code, which enhances the readability, to using specific structures within your code and avoiding common words that can confuse meaning. The rules of JavaScript syntax are fairly simple and straightforward; they include the following:

• Capitalization
• Reserved words
• Variable syntax
• Data types
• Logic structures
• Functions
• Punctuation

Capitalization counts

As with most programming languages, capitalization makes a difference. The myNode and mynode variables will be interpreted as completely different variables. That is, the computer will absolutely see the relationship between myNode and mynode because they are capitalized differently.

Reserved words

There are a good number of words reserved in JavaScript that cannot...