Syntax conventions: All keywords in syntax statements are in bold. Words in italics represent user-defined names or statements. Any portions enclosed in square brackets, [ ], are optional. {statements} indicates a block of statements, which can consist of a single statement or multiple statements delimited by a curly braces { }.

Table 3.1 lists statements available in JavaScript.

Table 3.1 JavaScript statements.  

break	Statement that terminates the current while or for loop and transfers program control to the statement following the terminated loop.
comment	Notations by the author to explain what a script does. Comments are ignored by the interpreter.
continue	Statement that terminates execution of the block of statements in a while or for loop, and continues execution of the loop with the next iteration.
delete	Deletes an object's property or an element of an array.
do...while	Executes its statements until the test condition evaluates to false. Statement is executed at least once.
export	Allows a signed script to provide properties, functions, and objects to other signed or unsigned scripts.
for	Statement that creates a loop that consists of three optional expressions, enclosed in parentheses and separated by semicolons, followed by a block of statements executed in the loop.
for...in	Statement that iterates a specified variable over all the properties of an object. For each distinct property, JavaScript executes the specified statements.
function	Statement that declares a JavaScript function name with the specified parameters. Acceptable parameters include strings, numbers, and objects.
if...else	Statement that executes a set of statements if a specified condition is true. If the condition is false, another set of statements can be executed.
import	Allows a script to import properties, functions, and objects from a signed script which has exported the information.
labeled	Provides an identifier that can be used with break or continue to indicate where the program should continue execution.
return	Statement that specifies the value to be returned by a function.
switch	Allows a program to evaluate an expression and attempt to match the expression's value to a case label.
var	Statement that declares a variable, optionally initializing it to a value.
while	Statement that creates a loop that evaluates an expression, and if it is true, executes a block of statements.
with	Statement that establishes the default object for a set of statements.

Last Updated: 10/31/97 12:29:59