Create new Calculator
importance: 5
Create a constructor function Calculator that creates objects with 3 methods:
read()prompts for two values and saves them as object properties with namesaandbrespectively.sum()returns the sum of these properties.mul()returns the multiplication product of these properties.
For instance:
let calculator = new Calculator(); calculator.read(); alert( "Sum=" + calculator.sum() ); alert( "Mul=" + calculator.mul() );function Calculator() { this.read = function() { this.a = +prompt('a?', 0); this.b = +prompt('b?', 0); }; this.sum = function() { return this.a + this.b; }; this.mul = function() { return this.a * this.b; }; } let calculator = new Calculator(); calculator.read(); alert( "Sum=" + calculator.sum() ); alert( "Mul=" + calculator.mul() );