5. Statements

Statement	Syntax	Support	Remark
Block Statement	{ StatementList }	Yes
Variable Statement	var varname [= value] [..., varname [= value]]	Yes
Empty Statement	;	Yes
Expression Statement	[lookahead notin {{, function}] Expression ;	Yes
if Statement	if ( Expression ) Statement else Statement	Yes
	if ( Expression ) Statement	Yes
Iteration Statements	do Statement while ( Expression ) ;	Yes	In NF3, if the loop timer reaches the limit, it stops executing the script. The default limit is 1,000,000. If built-in function is called or DOM method is executed in the loop, the process may escape from the loop before it reaches the limit.
	while ( Expression ) Statement	Yes	In NF3, if the loop timer reaches the limit, it stops executing the script. The default limit is 1,000,000. If built-in function is called or DOM method is executed in the loop, the process may escape from the loop before it reaches the limit.
	for ( ExpressionNoIn; Expression; Expression ) Statement	Yes	In NF3, if the loop timer reaches the limit, it stops executing the script. The default limit is 1,000,000. If built-in function is called or DOM method is executed in the loop, the process may escape from the loop before it reaches the limit.
	for ( var VariableDeclarationListNoIn; Expression; Expression ) Statement	Yes
	for ( LeftHandSideExpression in Expression ) Statement	Yes	In NF3, if the loop timer reaches the limit, it stops executing the script. The default limit is 1,000,000. If built-in function is called or DOM method is executed in the loop, the process may escape from the loop before it reaches the limit.
	for ( var VariableDeclarationNoIn in Expression ) Statement	Yes
continue Statement	continue [ no LineTerminator here ] Identifier ;	Yes
break Statement	break [ no LineTerminator here ] Identifier ;	Yes
return Statement	return [ no LineTerminator here ] Expression ;	Yes
with Statement	with ( Expression ) Statement	Yes
switch Statement	[ SwitchStatement :] switch ( Expression ) CaseBlock [ CaseBlock :] { CaseClauses } { CaseClauses DefaultClause CaseClauses } [ CaseClauses :] CaseClause CaseClauses CaseClause [ CaseClause :] case Expression : StatementList [ DefaultClause :] default : StatementList	Yes
labelled Statement	Identifier : statements	Yes
throw Statement	throw [ no LineTerminator here ] Expression ;	Yes
try Statement	[ TryStatement :] try Block Catch try Block Finally try Block Catch Finally [ Catch :] catch ( Identifier ) Block [ Finally :] finally Block	Yes
function Definition	[ FunctionDeclaration :] function Identifier ( FormalParameterList ) { FunctionBody } [ FormalParameterList :] Identifier FormalParameterList , Identifier [ FunctionBody :] SourceElements	Yes
	[ FunctionExpression :] function Identifieropt ( FormalParameterList ) { FunctionBody } [ FormalParameterList :] Identifier FormalParameterList , Identifier [ FunctionBody :] SourceElements	Yes
Comments	// comment text	Yes
	/* multiple line comment text */	Yes
export Statement	export name1, name2, ..., nameN	No
	export *	No
import Statement	import objectName. name1, objectName. name2,...,objectName. nameN	No
	import objectName.*	No