Here
are several JavaScript
Practice How Tos, from webdevelopmenttutorials.com, that show you How to code with
JavaScript by looking at the examples provided. You can use the text
editor here to practice coding your own JavaScript. Using these
JavaScripts examples and tutorials, you will learn the following: what
JavaScript is, what can be
done with JavaScript, how to embed JavaScript within your web pages,
how to link to an external JavaScript file and how to work with
JavaScript variables..
An
Introduction to JavaScript
JavaScript is used to
make web pages interactive, validate forms, detect web browsers, create
cookies and more.
Before you begin learning JavaScript, you should should
already have at
least a basic understanding of
HTML/XHTML.
JavaScript is a scripting language that
was designed to add
interactivity to web pages. JavaScript
consists of lines of executable code that can be emedded directly into
HTML web pages and is also
an interpreted language, which means that scripts are executed without
preliminary compilation. JavaScript is free for everyone to use.
How
to embed JavaScript into an HTML file
This tutorial teaches you how to JavaScript into an HTML
file.
How
to write text with JavaScript
This tutorial shows you how to write text with JavaScript
using the "document.write" command.
How
to add HTML tags to JavaScript
This tutorial demontrates how to add HTML tags to JavaScript.
How
to add comments to JavaScript code
This tutorial shows you how to add comments that will not be
displayed on web browsers in JavaScript.
How
to link to an external JavaScript file
This tutorial shows you how to link to an external JavaScript
file.
JavaScript Variable
How To Tutorials
These tutorials show you How to name and declare
JavaScript
variables, assign values to variables, How to convert between different
data types and more.
The rules for naming JavaScript variables are:
- JavaScript variables are case-senstitive, for
example, the variable
name "MySite" and "mysite"
are different
- they can include letters of the alphabet, both
upper-case and lower-case
- they can include the digits 0-9
- they can include the underscore (_) character
- they cannot include spaces or any other
punctuation characters
- the first character of the variable name must be
either a letter or an underscore character
- there is no standard limit on how many
characters
a variable name can have, but it must fit within one line
This JavaScript tutorial shows you How to
do the
following with variables:
- How to assign a value
to a variable
- How to declare JavaScript variables
- How to
change the value of a variable
You can use the text
editor here to practice coding your own JavaScript.