JavaScript Assignment Operators Last Updated : 05 Jun, 2025 Summarize Suggest changes Share Like Article Like Report Assignment operators are used to assign values to variables in JavaScript. JavaScript // Lets take some variables x = 10 y = 20 x = y ; console.log(x); console.log(y); Output20 20 More Assignment OperatorsThere are so many assignment operators as shown in the table with the description.OPERATOR NAMESHORTHAND OPERATORMEANINGAddition Assignmenta+=ba=a+bSubtraction Assignmenta-=ba=a-bMultiplication Assignmenta*=ba=a*bDivision Assignmenta/=ba=a/bRemainder Assignmenta%=ba=a%bExponentiation Assignmenta**=ba=a**bLeft Shift Assignmenta<<=ba=a<<bRight Shift Assignmenta>>=ba=a>>bBitwise AND Assignmenta&=ba=a&bBitwise OR Assignmenta|=ba=a | bBitwise XOR Assignmenta^=ba=a^bLogical AND Assignmenta&&=bx && (x = y)Logical OR Assignment||=x || (x = y)Nullish coalescing Assignment??=x ?? (x = y)Addition Assignment Operator(+=)The Addition assignment operator adds the value to the right operand to a variable and assigns the result to the variable. Addition or concatenation is possible. In case of concatenation then we use the string as an operand.Example: JavaScript let a = 2; const b = 3; // Expected output: 2 console.log(a); // Expected output: 4 console.log(a += b ); Output2 4 Subtraction Assignment Operator(-=)The Substraction Assignment Operator subtracts the value of the right operand from a variable and assigns the result to the variable.Example: JavaScript let yoo = 4; // Expected output 3 console.log(yoo -= 1); Output3 Multiplication Assignment Operator(*=)The Multiplication Assignment operator multiplies a variable by the value of the right operand and assigns the result to the variable.Example: JavaScript let yooMul = 4; // Expected output 3 console.log(yooMul *= 2); Output3 Division Assignment Operator(/=)The Division Assignment operator divides a variable by the value of the right operand and assigns the result to the variable.Example: JavaScript let yooDiv = 10; const moo = 2; console.log(yooDiv /= moo); console.log(yooDiv /= 0); Output5 Infinity Remainder Assignment Operator(%=)The Remainder Assignment Operator divides a variable by the value of the right operand and assigns the remainder to the variable.Example: JavaScript let yooRem = 50; console.log(yooRem %= 10); Output0 Exponentiation Assignment OperatorThe Exponentiation Assignment Operator raises the value of a variable to the power of the right operand.Example: JavaScript let yooExp = 2; console.log(yooExp **= 3); Output0 Left Shift Assignment Operator(<<=)This Left Shift Assignment Operator moves the specified amount of bits to the left and assigns the result to the variable.Example: JavaScript let yooShiftLeft = 5; console.log(yooShiftLeft <<= 2); Output20 Right Shift Assignment Operator(>>=)The Right Shift Assignment Operator moves the specified amount of bits to the right and assigns the result to the variable.Example: JavaScript let yooShiftRight = 5; console.log(yooShiftRight >>= 2); Output1 Bitwise AND Assignment Operator(&=)The Bitwise AND Assignment Operator uses the binary representation of both operands, does a bitwise AND operation on them, and assigns the result to the variable.Example: JavaScript let yooBitwiseAnd = 5; console.log(yooBitwiseAnd &= 2); Output0 Btwise OR Assignment Operator(|=)The Btwise OR Assignment Operator uses the binary representation of both operands, does a bitwise OR operation on them, and assigns the result to the variable.Example: JavaScript let yooBitwiseOr = 5; console.log(yooBitwiseOr |= 2); Output7 Bitwise XOR Assignment Operator(^=)The Bitwise XOR Assignment Operator uses the binary representation of both operands, does a bitwise XOR operation on them, and assigns the result to the variable.Example: JavaScript let yooBitwiseXor = 5; console.log(yooBitwiseXor ^= 2); Output7 Logical AND Assignment Operator(&&=)The Logical AND Assignment assigns the value of y into x only if x is a truthy value.Example: JavaScript let name = { firstName: "Ram", lastName: "" }; console.log(name.firstName); name.firstName &&= "Shyam"; console.log(name.firstName); console.log(name.lastName); name.lastName &&= "Kumar"; console.log(name.lastName); OutputRam ShyamLogical OR Assignment Operator(||=)The Logical OR Assignment Operator is used to assign the value of y to x if the value of x is falsy.Example: JavaScript let nameOr = { firstName: "Ram", lastName: "" }; console.log(nameOr.firstName); nameOr.firstName ||= "Shyam"; console.log(nameOr.firstName); console.log(nameOr.lastName); nameOr.lastName ||= "Kumar"; console.log(nameOr.lastName); OutputRam Ram Kumar Nullish coalescing Assignment Operator(??=)The Nullish coalescing Assignment Operator assigns the value of y to x if the value of x is null.Example: JavaScript let xNull = 12; let yNull = null; let zNull = 13; xNull ??= zNull; yNull ??= zNull; console.log(xNull); console.log(yNull); Output12 13 Supported Browsers: The browsers supported by all JavaScript Assignment operators are listed below:Google ChromeFirefoxOperaSafariMicrosoft Edge Advertise with us Next Article JavaScript Comparison Operators S shivani_21 Follow Similar Reads JavaScript Tutorial JavaScript is a programming language used to create dynamic content for websites. 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