
JavaScript ( JS) is a lightweight, interpreted, or just-in-time compiled programming language with first-class functions. Enumerability and ownership of properties.Synta圎rror: unterminated string literal.Synta圎rror: unparenthesized unary expression can't appear on the left-hand side of '**'.Synta圎rror: function statement requires a name.ReferenceError: reference to undefined property "x".ReferenceError: assignment to undeclared variable "x".Synta圎rror: "use strict" not allowed in function with non-simple parameters.
Runjs vs make code#

TypeError: setting getter-only property "x".Synta圎rror: test for equality (=) mistyped as assignment (=)?.Warning: String.x is deprecated use instead.Synta圎rror: Using to indicate sourceURL pragmas is deprecated.Synta圎rror: "0"-prefixed octal literals and octal escape seq.Warning: expression closures are deprecated.

ReferenceError: deprecated caller or arguments usage.Synta圎rror: applying the 'delete' operator to an unqualified name is deprecated.Synta圎rror: cannot use `?` unparenthesized within `||` and `&` expressions.TypeError: can't redefine non-configurable property "x".TypeError: property "x" is non-configurable and can't be deleted.TypeError: can't define property "x": "obj" is not extensible.TypeError: can't convert BigInt to number.RangeError: x can't be converted to BigInt because it isn't an integer.TypeError: can't assign to property "x" on "y": not an object.ReferenceError: can't access lexical declaration 'X' before initialization.TypeError: X.prototype.y called on incompatible type.Synta圎rror: invalid regular expression flag "x".Warning: 08/09 is not a legal ECMA-262 octal constant.

