JavaScript

Using tutorial at Tizag.

From the Beginning

Let's review some JavaScript.

If JS is in the <body>, start with the HTML comment mark < - - and the js comment mark, / / followed by the HTML close comment. - - >
Multiline comments are /* to open and */ to close, also surrounded by < - - and - - >.
Statements are terminated by newline, ";" is required only if on the same line.
Put JS for events in the head section and or use an external file containing nothing but JavaScript and named with the ".js" extension.
The operators are standard.
The var operator is not required, only used as good practice.
Function declarations look like this

and are called like this: