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33 | const counter = (
function counter() {
let value = 0;
return {
getValue: function() {
return value;
},
changeBy: function (k) {
value += k;
}
}
}
)();
function getFixedCounter(k) {
let myCounter = counter;
return {
increment: () => {
myCounter.changeBy(k);
},
decrement: () => {
myCounter.changeBy(-k);
},
getValue: () => {
return myCounter.getValue();
}
}
}
console.log(counter.getValue());
counter.changeBy(10);
counter.changeBy(20);
console.log(counter.getValue());
|
