JavaScript Keywords must be in your information because you can not use them as a variable name.

What Are JavaScript Keywords?

Keywords are reserved words in JavaScript that cannot use to indicate variable labels or function names. There are a total of 63 keywords that JavaScript provides. All of them are shown in the below-mentioned table:

JavaScript Reserved Keywords List

You can't use a keyword as an identifier in your JavaScript programs; it's reserved words and used to perform internal operations.

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 let 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

ECMAScript5 New Keywords

class enum export extends
import super

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