Create new Calculator
الأهمية: 5
Create a constructor function Calculator that creates objects with 3 methods:
read()asks for two values usingpromptand remembers them in object properties.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() );