Asc() - Returns ANSI Character Code 

Chr() - Returns Character from ANSI Code 

InStr() - Find a string within another 

InStrRev() - Find a string within another (Reverse) 

LCase() - Convert a string to lowercase 

Left() - Crops a string from left 

Len() - Determine the length of a string 

LTrim() - Remove leading spaces from a string 

Mid() - Crops a string 

Replace() - Replace a substring within a string 

Right() - Crops a string from right 

RTrim() - Remove trailing spaces from a string 

Space() - Creates a string with the specified number of spaces 

StrComp() - Compare two strings 

String() - Creates a repeated character string 

StrReverse() - Reverse the characters of a string 

Trim() - Remove both leading and trailing spaces from a string 

UCase() - Convert a string to uppercase 

Math object has two constant : Math.PI and Math.E

Math object has following functions:

- Math.abs(val1);

It will give absolute value of val1.

- Math.max(val1,val2);

This fuction will return maximum value from val1 and val2.

- Math.random();

This function will return a random number between 0 and 1.

- Math.floor(val1)

This function will returns decimal value of val1

The storage of cookies on the hard disk depends on OS and the browser. The Netscape navigator on Windows, the file cookies.txt contains all the cookies. The path is :

c:\Program Files\Netscape\Users\username\cookies.txt

The Internet Explorer stores the cookies on a file by name username@website.txt is

c:\Windows\Cookies\username@Website.txt

- External Style Sheets are useful as it keeps the style and content separately and doesn’t allow it to mix with each other. It can control the styles for multiple documents, whereas inline style mixes the content with the style and make the code messier.

- External style sheet allows the creation of various classes in a structured way, whereas inline style sheet can’t create or control class elements.

- External style sheet can use selector and grouping methods to apply styles, whereas inline styles can’t use selector and grouping methods.

Here the property will be ignored without having any effect on the paragraph.

A Manifest file is a simple text file that tells the browser what to cache and what not to cache. 

There are three sections of a Manifest file:

i.) CACHE MANIFEST - Files listed here are cached after they are downloaded for the first time. 

ii.) NETWORK - Files listed here require a connection to the server, and are never cached

iii.) FALLBACK - Files listed here specify fallback pages if a page is inaccessible

- localStorage object stores the data without an expiry date while sessionStorage object stores the data only for one session. 

- With localStorage object, data will not be deleted when the browser window is closed while the data is deleted when the browser window closes with sessionStorage objects.