JavaScript Programs

Where the JavaScript Goes Information about CDATA or separate files.
NOTE that in HTML5 you do NOT need to enclose the scripts with CDATA.
Each example comes in two versions. The versions linked to on this page do not
use CDATA and a file with _poly appended to the end does use CDATA. For example
there are files functions1.html and functions1_poly.html

NOTE also that in HTML5 the script tag does NOT require the lang attribute, but some
earlier versions of HTML did, so I have included it.

1. functions1.html, functions1wExternalJS.html
   TestBrowser.html, TestBrowserWithComments.html, TestBrowserWithComments2.html
   <script language="javascript">
   CDATA or external files for the JavaScript
   hiding JavaScript from old browsers inside comments
   function notation and parameters
   alert( )
2. functions2a1.html , functions2a2.html, functions2a3.html , makeChange.html
   variables - defining and changing their values and types
   returning a value from a function
   prompt( ) and parseInt( )
   concatenation vs. addition - overloading of operators
   document.write( ) 
3. doc_write.html, doc_write_revisted.html
   including HTML tags, single and double quotes
   including images 
   document.write(string1,string2) etc. form
   multiple document.writes vs. assembling one long string
4. arith_funtions1.html, arith_functions_2.html
   functions for adding, multiplying etc. one and two variables
5. CoerceTypes.html, TypeConversion_properlyDone.html
   stings and numbers (integer, float) and + operator
   how to convert between strings and numbers
6. GlobalChange, moreGlobalChange Scope_of_Vars
   local and global variables
7. miniTable.html
   how to write out a table in document.write( )
8. rounding.html
   how to get floating point numbers rounded and
   how to print out to a certain number of decimal places