Assignment Operators

In javascript, the assignment operators are used to assign values to the variables.

Assignment operator

The assignment operator is used to assign a value to the variable.

Example

let age = 20;

Here, the value 10 is assigned to the variable age.

Addition Assignment Operator

This operator is used to add a value to a variable value and assigns the result to the variable.

Example

let age = 20;
age+=1;
console.log(age);  // 21

The addition assignment operator, adds 1 to the variable age and the value of age becomes 21.

Subtraction Assignment Operator

This operator is used to subtract a value in a variable value and assigns the result to the variable.

Example

let age = 20;
age-=1;
console.log(age);  // 19

The subtraction assignment operator, subtracts 1 from the variable age and the value of age becomes 19.

Multiplication Assignment Operator

This operator is used to multiply a value to the variable value and assigns the result to the variable.

Example

let salary = 20000;
salary*=2;
console.log(salary);  // 40000

The multiplication assignment operator, multiplies 2 to the variable salary and the value of salary becomes 40000.

Division Assignment Operator

This operator is used to divide a variable value and assign the result to the variable.

Example

let age = 20;
age-=1;
console.log(age);  // 19

The subtraction assignment operator, subtracts 1 from the variable age and the value of age becomes 19.

Modulo Assignment Operator

This operator is used to perform the modulo operation to the variable and assigns the result to the variable.

Example

let x = 21;
x%=2;
console.log(x);  // 1

When performing modulo of 2 to the variable x it returns and assigns the reminder value to the variable x.