JavaScript | Reserved Words

In JavaScript you cannot use these reserved words as variables names, labels names or function names.

Reserved Words:

abstract	arguments	boolean	break	byte
case	catch	char	const	continue
debugger	default	delete	do	double
else	eval	false	final	finally
float	for	function	goto	if
implements	in	instanceof	int	interface
long	native	new	null	package
private	protected	public	return	short
static	switch	synchronized	this	throw
throws	transient	true	try	typeof
var	void	volatile	while	with
yield

Reserved Words added in ECMAScript 5 and 6.

awaits	class	enum	export
extends	import	let	super

Removed Reserved Words

Following reserved words has been removed from ECMAScript 5 and 6.

abstract	boolean	byte	char
double	final	float	goto
int	long	native	short
synchronized	throws	transient	volatile

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