JavaScript interpret JavaScript.

Zero dependencies.

Start

npm install
npm run start

Test

npm run test

Support features

MDN

Expressions & operators

• Addition (+)
• Addition assignment (+=)
• Assignment (=)
• async function expression
• async function* expression
• await
• Bitwise AND (&)
• Bitwise AND assignment (&=)
• Bitwise NOT (~)
• Bitwise OR (|)
• Bitwise OR assignment (|=)
• Bitwise XOR (^)
• Bitwise XOR assignment (^=)
• class expression
• Comma operator (,)
• Conditional (ternary) operator
• Decrement (--)
• delete operator
• Destructuring assignment
• Division (/)
• Division assignment (/=)
• Equality (==)
• Exponentiation (**)
• Exponentiation assignment (**=)
• Function expression
• function* expression
• Greater than (>)
• Greater than or equal (>=)
• Grouping operator ( )
• import
• import.meta
• in operator
• Increment (++)
• Inequality (!=)
• instanceof
• Left shift (<<)
• Left shift assignment (<<=)
• Less than (<)
• Less than or equal (<=)
• Logical AND (&&)
• Logical AND assignment (&&=)
• Logical NOT (!)
• Logical nullish assignment (??=)
• Logical OR (||)
• Logical OR assignment (||=)
• Multiplication (*)
• Multiplication assignment (*=)
• new operator
• new.target
• null
• Nullish coalescing operator (??)
• Object initializer
• Operator precedence
• Optional chaining (?.)
• Property accessors
• Remainder (%)
• Remainder assignment (%=)
• Right shift (>>)
• Right shift assignment (>>=)
• Spread syntax (...)
• Strict equality (===)
• Strict inequality (!==)
• Subtraction (-)
• Subtraction assignment (-=)
• super
• this
• typeof
• Unary negation (-)
• Unary plus (+)
• Unsigned right shift (>>>)
• Unsigned right shift assignment (>>>=)
• void operator
• yield
• yield*

Statements & declarations

• async function
• async function*
• block
• break
• class
• const
• continue
• debugger
• do...while
• empty
• export
• for
• for await...of
• for...in
• for...of
• function declaration
• function*
• if...else
• import
• label
• let
• return
• switch
• throw
• try...catch
• var
• while
• with

Functions

• The arguments object
• Arrow function expressions
• Default parameters
• getter
• Method definitions
• Rest parameters
• setter

Classes

• Class static initialization blocks
• constructor
• extends
• Private class features
• Public class fields
• static