Statements

Following types of statements are supported by JSX. The differences from JavaScript are:

• block statements cannot have labels
• the introduction of super(...) statement
• delete is a statement instead of an expression
• argument of catch clause can be typed, and thus the clause is nestable

Statement	Description
;	empty statement
{ statement* }	block statement
expr;	evaluates the expr
return;	returns void
return expr;	returns the result of the expr
if (expr) statement [else statement]	if statement
var varname[ = expr][, varname2 = expr2, ...];	variable declaration
break;	exits from the inner-most loop or switch statement
break LABEL;	exits to the loop or switch statement with label LABEL
continue;	skips to the end of the loop statement
continue LABEL;	skip to the end of the loop statement with label LABEL
[LABEL:]do statement while (expr);
[LABEL:]for (expr in expr) statement
[LABEL:]for (var varname in expr) statement
[LABEL:]for (expr; expr; expr) statement
[LABEL:]for (var varname = expr; expr; expr) statement
[LABEL:]while (expr) statement
[LABEL:]switch (expr) statement
case expr:statement
default:statement
delete expr;	deletes the property of a Map returned by the expr
super(...);	calls the constructor of the super class
try { statement* } [catch (varname : type) { statement* }]* [finally { statement* }]	catch statement can be nested