Create a calculator
importance: 5
Create an object calculator with three methods:
read()prompts for two values and saves them as object properties with namesaandbrespectively.sum()returns the sum of saved values.mul()multiplies saved values and returns the result.
let calculator = {
// ... your code ...
};
calculator.read();
alert( calculator.sum() );
alert( calculator.mul() );let calculator = {
sum() {
return this.a + this.b;
},
mul() {
return this.a * this.b;
},
read() {
this.a = +prompt('a?', 0);
this.b = +prompt('b?', 0);
}
};
calculator.read();
alert( calculator.sum() );
alert( calculator.mul() );