ADD SCRIPTS TO HTML PAGES

A line of code is called a statement . Statements are the phrases and sentences of a programming language. A program is essentially a collection of statements. In JavaScript (the language you'll use from this point on to illustrate basic programming concepts), statements end with a semicolon.

The semicolon is not always required for correct JavaScript syntax, but it makes it much easier to debug your code and keep track of where one statement ends and a new one begins.

A statement is a single line of code. Don't insert line returns in the middle of a statement; let the code wrap, if necessary. (Note that in this course, however, we've inserted returns in lines of code that won't fit on the page.)

A line return character in the middle of a statement is one of the most common errors in JavaScript, and will make your code nonfunctional. In JavaScript, unlike HTML, if there are problems with your code, it won't display in the wrong way -- it just won't do anything at all.