Webmaster in a Nutshell, Second Edition

Global Functions

Core JavaScript defines a handful of global functions:

escape(s)

Encode a string for transmission. JavaScript 1.0; ECMA-262; Unicode support in Internet Explorer 4.

eval(code)

Execute JavaScript code from a string.

getClass(javaobj)

Return the JavaClass of a JavaObject. Navigator 3.

isFinite(n)

Determine whether a number is finite. JavaScript 1.2; ECMA-262.

isNaN(x)

Check for not-a-number. JavaScript 1.1; ECMA-262.

parseFloat(s)

Convert a string to a number. JavaScript 1.0; enhanced in JavaScript 1.1; ECMA-262.

parseInt(s, radix)

Convert a string to an integer. JavaScript 1.0; enhanced in JavaScript 1.1; ECMA-262.

unescape(s)

Decode an escaped string. JavaScript 1.0; ECMA-262; Unicode support in Internet Explorer 4.

In addition to these core global functions, the Window object defines a number of client-side global methods.