The Global object lives in every window or frame of a JavaScript-enabled browser (it is created for you automatically). You don't ever reference t

Provides a numerical positive infinity (or negated with the - operator). We're talking a practical, as opposed to a theoretical, infinity here. An

This is a value that is not-a-number. JavaScript returns this value when a numerical operation yields a non-numerical result because of a flaw in on

While the undefined data type has been in ECMAScript and browsers since very early times, only recently was it also elevated to a formal property

Returns a string with most URI-encoded values in the parameter restored to their original symbols. Operates only on escaped (encoded) characters tha

These methods let you convert arbitrary strings to a 65-character subset of the U.S.-ASCII character set.

Returns a string with all URI-encoded values in the parameter restored to their original symbols. Intended for use on data portions of a URI excluding

Returns a string with most URI-encodable values in the parameter converted to their escaped versions (e.g., a space character is converted to %20 )

Returns a string with all characters except Latin character set letters A through Z (upper and lower cases), digits 0 through 9 , and a set

Returns a URL-encoded version of the string passed as a parameter to the function. URL encoding converts most nonalphanumeric characters (except *

Returns an object reference of the object described as a string in the parameter of the function. For example, if a form has a sequence of text fiel

Returns a reference to an ActiveX object hosted on the client machine whose path name the script is aware of. This is an alternate to creating an in

Returns a Boolean value of true if the number passed as a parameter is anything within the range of Number.MIN_VALUE and Number.MAX_VALUE , in

Returns a Boolean value of true if the expression passed as a parameter does not evaluate to a numeric value. Any expression that evaluates to Na

Returns an integer value (as a number data type in base-8 or base-10) of the numerals in the string passed as a parameter. The string value must at