Introduction

In JavaScript operators are used to perform math operations on variables and values, check if they fullfil a condition, and give more use to our functions. The following math operations are supported: Addition +, Subtraction -, Multiplication *, Division /, Remainder %, and Exponentiation **. In Addition; there is a set of comparison and logical operators.

Primary calculation operators

The primary operator in math are addition, subtraction, amultiplication and division. They are straightforward! Below are some examples;

        
          console.log( 2 + 2 ); // 4
          console.log( 8 - 3 ); // 5
          console.log( 4 * 5 ); // 20
          console.log( 15 / 3 ); // 5
        
      

Remainder %

The remainder operator %, despite its appearance, is not related to percents. The result of a % b is the remainder of the integer division of a by b.

        
          console.log( 5 % 2 ); // 1, a remainder of 5 divided by 2
          console.log( 8 % 3 ); // 2, a remainder of 8 divided by 3
        
      

Exponentiation **

The exponentiation operator a ** b multiplies a by itself b times.

        
          console.log( 2 ** 2 ); // 4  (2 multiplied by itself 2 times)
          console.log( 2 ** 3 ); // 8  (2 * 2 * 2, 3 times)
          console.log( 2 ** 4 ); // 16 (2 * 2 * 2 * 2, 4 times)
          console.log( 4 ** (1/2) ); // 2 (power of 1/2 is the same as a square root)
          console.log( 8 ** (1/3) ); // 2 (power of 1/3 is the same as a cubic root)
        
      

Comparision & Logical operators

Comparison operators are operators that compare values and return true or false . The operators include: > , < ,>= , <= ,===, and ! (not).
Logical operators are operators that combine multiple boolean expressions or values and provide a single boolean output. The operators include: && , || , and ! .
Below are some examples of how these operators are used as conditions in functions

          
            if(num > 5) {
              console.log("Simple check:", "TRUE!");
            }

            if(num === 5) {
              console.log("Strict equality:", "TRUE!");
            }

            if(num > 5 || num2 < 30) {
              console.log("Double check with OR:", "TRUE");
            }

            if(num > 5 && num2 < 30) {
              console.log("Double check with AND:", "TRUE");
            }

            if(num != "5") {
              console.log("not operator: TRUE!");
            }