Array, Date, and Math, and a core set of language elements such as operators, control structures, and statements. See also client-side JavaScript, server-side JavaScript.undefined, null, Boolean, number, or string. The following examples show some primitive values.a=true // Boolean primitive value
b=42 // number primitive value
c="Hello world" // string primitive value
if (x==undefined) {} // undefined primitive value
if (x==null) {} // null primitive value
Date object. Some methods of Date, such as getHours and setDate, are also methods of instances of the Date object. Other methods of Date, such as parse and UTC, are static, so instances of Date do not have these methods.Last Updated: 10/29/98 15:51:16