Keywords and statement syntax

Table 5.1 lists and describes all keywords and statements recognized by the After Effects scripting engine.

Table  1 Keywords and Statement Syntax

Keyword/Statement	Description
break	Standard JavaScript construct. Exit the currently executing loop.
continue	Standard JavaScript construct. Cease execution of the current loop iteration.
case	label used in a switch statement
default	label used in a switch statement when a case label is not found
do - while	Standard JavaScript construct. Similar to the while loop, except loop condition evaluation occurs at the end of the loop.
false	Literal representing boolean false.
for	Standard JavaScript loop construct.
for - in	Standard JavaScript construct. Provides a way to easily loop through the properties of an object.
function	Used to define a function.
if/if - else	Standard JavaScript conditional constructs.
new	Standard JavaScript constructor statement.
null	Assigned to a variable, array element, or object property to indicate that it does not contain a legal value.
return	Standard JavaScript way of returning a value from a function or exiting a function.
switch	Standard JavaScript way of evaluating an expression and attempting to match the expression's value to a case label.
this	Standard JavaScript method of indicating the current object.
true	Literal representing boolean true.
undefined	Indicates that the variable, array element, or object property has not yet been assigned a value.
var	Standard JavaScript syntax used to declare a local variable.
while	Standard JavaScript construct. Similar to the do - while loop, except loop condition evaluation occurs at the beginning of the loop.
with	Standard JavaScript construct used to specify an object to use in ensuing statements.