5.4 Special Operators

In this chapter, we have covered the most commonly used JavaScript functions. Table 5.17 lists some of the other operators available to be discussed in later chapters when they are applicable .

Table 5.17. Other useful JavaScript operators.

Operator	What It Does
, (comma)	Evaluates two expressions and returns the result of the second expression
delete	Deletes an object, an object's property, or an element at a specified index in an array
function	Defines an anonymous function
in (Netscape 6+, IE 5.5+)	Returns true if the property is a property of a specified object
instanceof (Netscape 6+, IE 5+)	Returns true if the object is of a given object type
new	Creates an instance of a user -defined object type or of one of the built-in object types
this	Keyword that you can use to refer to the current object
void	Specifies an expression to be evaluated without returning a value