reference values – understand two value types in JavaScript, including primitive and reference values, and the differences between them. Object – introduce you to the object type.String – learn about string primitive type and some basic string operations. Boolean – introduce you to the Boolean type.Octal & binary literals – provide support for binary literals and change the way to represent octal literals.Numeric Separator– show you how to make the numbers more readable by using underscores as numeric separators.Number – learn how JavaScript use the Number type to represent the integer and floating-point numbers.Data types – introduce to you the JavaScript data types, including primitive and reference types.Variables – show you how to declare variables.Syntax – explain the JavaScript syntax, including whitespace, statements, identifiers, keywords, expressions, and comments.
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