JavaScript: Adding static methods to a class

Static methods are defined using ‘static’ keyword. Static methods are called without instantiating the class.

Syntax to call static method

ClassName.methodName(arguments)

HelloWorld.js

class InterestCalc{
  
  constructor(principle, time, rateOfInterest){
    this.principle = principle;
    this.time = time;
    this.rateofInterest = rateOfInterest;
  }

  static getInterest(Interest){
    var Interest = (Interest.principle * Interest.time * Interest.rateofInterest) / 100;
    return Interest;
  }
}

var obj1 = new InterestCalc(1000, 5, 2);
var interest = InterestCalc.getInterest(obj1);

console.log("Interest is : " + interest);

Output

Interest is : 100

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