switch – show you how to replace multiple if statements when comparing a value with multiple variants by using the switch statement. Ternary operators – show you how to make a shortcut for the if statement ( ?:). if…else…if – check multiple conditions and execute a block. if…else – learn how to execute a block of code based on a specified condition. if – show you how use the if statement to execute a block if a condition is true. 
Exponentiation operator – introduce you to the exponentiation operator ( **) that calculates a base to the exponent power, which is similar to Math.pow() method. Nullish coalescing operator ( ?) – accept two values and return the second value if the first one is null or undefined. Logical assignment operators – introduce to you the logical assignment operators, including ||=, &=, and ?=. Logical operators – learn how to use the logical operators: NOT ( !), AND ( &), and OR ( ||). Comparison operators – show you how to use comparison operators to compare two values. Unary operators – learn how to use unary operators. Assignment operators – guide you on how to use assignment operators ( =) to assign a value or an expression to a variable. Remainder operator – show you how to use the remainder operator ( %) to get the remainder left over when one value is divided by another value. 
Arithmetic operators – introduce to you the arithmetic operators including addition ( +), subtraction ( -), multiplication ( *), and division ( /).Array – introduce you to the Array type and how to manipulate array elements.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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