Operators are capable of manipulating a certain value or operand. Operators are used to perform specific mathematical and logical manipulation on operand.

In Javascript operators are used for compare values, perform arithmetic operations.

Arithmetic operators.

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Addition

The + operator produced the sum of numeric operands or string concatenation.

let a = 93 + 44;
console.log(a);

Note: '+' operator can also be used to add strings.

let add = "hey" + "how's" + "life";

Subtraction.

Operator perform subtraction on two operands.

let a = 45;
let b = 20;
console.log(a - b);

Multiplication.

Operator (*) produces the product of the operand.

let x = 3;
let y = 3;
console.log(x * y) ;

Division.

( / ) operator produces the quotient of its operands where the left operand is the dividend and right operand is divisor.

console.log(12 / 2);

Modulas.

It gives remainder of an integer dovision.

Ex- Checking if a number is even is equivalent to checking if n%2===0.

function  isEven (n) {
return n%2 ===0;
}

Incremment.

Operator increases an integer value by one.

let x = 3;
let y = x++;
console.log(y);

Assingment opreators.

Assignment operator

It assign right operand value to left operand or it used to assign value to a variable.

let x = 2;

Addition assignment

Sums up left and right operand value and then assign the result to the left operand.

let a = 2;
let b = 'hello';
console.log(a += 3);

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Comparison operators.

Equal to ( == )

The equality operators checks whether its two operands are equal, return a boolean result if equal the condition is true otherwise false.

let a = 2;
let b = 4;
console.log(a == b);

Strict equal to ( === )

Compares equality of two operands with data type. If equal then condition is true otherwise false.

console.log( 'hello' === 'hello' );