Калькулятор JavaScript возвращает неправильную общую сумму (100 + 200, нажмите Enter, результат - 300, нажмите Enter сно ⇐ Javascript

[Anonymous]

Я строю простой калькулятор JavaScript, который поддерживает входы клавиатуры и кнопки. < /p>
Проблема: < /p>
Когда я выполняю следующие шаги: < /p>
type 100 + 200, затем нажмите Enter → Result 300, нажмите Enture Enter. становится 500 (должно быть 200) < /p>
Каждый новый ввод после нажатия Enter должен запустить свежий расчет < /p>
Как я могу исправить свою логику, чтобы каждый новый расчет начинался свежим после нажатия Enter? Lang-Js PrettyPrint-Override ">document.querySelector("#eight");
const nine = document.querySelector("#nine");
const point = document.querySelector("#point");
let operator = "";
let numbers = [undefined, undefined];
let isTotal = false;
let isFresh = false;
document.addEventListener("keydown", (event) => {
let key = event.key;
if (key === ".") {
putPoint();
}
if (key === "0") {
putZero();
}
if (key === "1") {
putOne();
}
if (key === "2") {
putTwo();
}
if (key === "3") {
putThree();
}
if (key === "4") {
putFour();
}
if (key === "5") {
putFive();
}
if (key === "6") {
putSix();
}
if (key === "7") {
putSeven();
}
if (key === "8") {
putEight();
}
if (key === "9") {
putNine();
}
if (key === "Escape") {
clearDisplay();
}
if (key === "+") {
addNumber();
}
if (key === "-") {
subtractNumbers();
}
if (key === "*") {
multiplyNumbers();
}
if (key === "/") {
divideNumbers();
}
if (key === "Enter") {
event.preventDefault();
totalNumbers();
}
if (key === "%") {
percentage();
}
});
point.addEventListener("click", putPoint);
function putPoint() {
if (!calcDisplay.value.includes(".")) {
calcDisplay.value += ".";
}
}
function putZero() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "0";
}
zero.addEventListener("click", putZero);
one.addEventListener("click", putOne);
function putOne() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "1";
}
two.addEventListener("click", putTwo);
function putTwo() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "2";
}
three.addEventListener("click", putThree);
function putThree() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "3";
}
four.addEventListener("click", putFour);
function putFour() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "4";
}
five.addEventListener("click", putFive);
function putFive() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "5";
}
six.addEventListener("click", putSix);
function putSix() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "6";
}
seven.addEventListener("click", putSeven);
function putSeven() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "7";
}
eight.addEventListener("click", putEight);
function putEight() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "8";
}
nine.addEventListener("click", putNine);
function putNine() {
if (
calcDisplay.value === "+" ||
calcDisplay.value === "-" ||
calcDisplay.value === "/" ||
calcDisplay.value === "*" ||
operator === "equals" ||
isTotal ||
isFresh
) {
calcDisplay.value = "";
if (isTotal) {
numbers[0] = undefined;
}
isTotal = false;
isFresh = false;
}
calcDisplay.value += "9";
}
clearBtn.addEventListener("click", clearDisplay);
function clearDisplay() {
calcDisplay.value = "";
numbers[0] = undefined;
numbers[1] = undefined;
operator = undefined;
}
plus.addEventListener("click", addNumber);
function addNumber() {
if (operator === "division") {
let quo = numbers[0] / Number(calcDisplay.value);
numbers[0] = quo;
calcDisplay.value = "+";
} else if (operator === "subtraction") {
let diff = numbers[0] - Number(calcDisplay.value);
numbers[0] = diff;
calcDisplay.value = "+";
} else if (operator === "multiplication") {
let prod = numbers[0] * Number(calcDisplay.value);
numbers[0] = prod;
calcDisplay.value = "*";
} else {
numbers[1] = Number(calcDisplay.value);
if (numbers[0] === undefined) {
numbers[0] = numbers[1];
} else {
numbers[0] = numbers[0] + numbers[1];
}
numbers[1] = 0;
calcDisplay.value = "+";
}
operator = "addition";
}
minus.addEventListener("click", subtractNumbers);
function subtractNumbers() {
if (operator === "addition") {
let sum = numbers[0] + Number(calcDisplay.value);
numbers[0] = sum;
calcDisplay.value = "-";
} else if (operator === "division") {
let quo = numbers[0] / Number(calcDisplay.value);
numbers[0] = quo;
calcDisplay.value = "-";
} else if (operator === "multiplication") {
let prod = numbers[0] * Number(calcDisplay.value);
numbers[0] = prod;
calcDisplay.value = "-";
} else {
numbers[1] = Number(calcDisplay.value);
if (numbers[0] === undefined) {
numbers[0] = numbers[1];
} else {
numbers[0] = numbers[0] - numbers[1];
}
numbers[1] = 0;
calcDisplay.value = "-";
}
operator = "subtraction";
}
multiply.addEventListener("click", multiplyNumbers);
function multiplyNumbers() {
if (operator === "addition") {
let sum = numbers[0] + Number(calcDisplay.value);
numbers[0] = sum;
calcDisplay.value = "*";
} else if (operator === "subtraction") {
let diff = numbers[0] - Number(calcDisplay.value);
numbers[0] = diff;
calcDisplay.value = "*";
} else if (operator === "division") {
let quo = numbers[0] / Number(calcDisplay.value);
numbers[0] = quo;
calcDisplay.value = "*";
} else {
numbers[1] = Number(calcDisplay.value);
if (numbers[0] === undefined) {
numbers[0] = numbers[1];
} else {
numbers[0] = numbers[0] * numbers[1];
}
numbers[1] = 0;
calcDisplay.value = "*";
}
operator = "multiplication";
}
divide.addEventListener("click", divideNumbers);
function divideNumbers() {
if (operator === "addition") {
let sum = numbers[0] + Number(calcDisplay.value);
numbers[0] = sum;
calcDisplay.value = "/";
} else if (operator === "subtraction") {
let diff = numbers[0] - Number(calcDisplay.value);
numbers[0] = diff;
calcDisplay.value = "/";
} else if (operator === "multiplication") {
let prod = numbers[0] * Number(calcDisplay.value);
numbers[0] = prod;
calcDisplay.value = "/";
} else {
numbers[1] = Number(calcDisplay.value);
if (numbers[0] === undefined) {
numbers[0] = numbers[1];
} else {
numbers[0] = numbers[0] / numbers[1];
}
numbers[1] = 0;
calcDisplay.value = "/";
}
operator = "division";
}
equal.addEventListener("click", totalNumbers);

function totalNumbers() {
numbers[1] = Number(calcDisplay.value); // second input
let result;

if (operator === "addition") {
result = numbers[0] + numbers[1];
} else if (operator === "subtraction") {
result = numbers[0] - numbers[1];
} else if (operator === "multiplication") {
result = numbers[0] * numbers[1];
} else if (operator === "division") {
result = numbers[0] / numbers[1];
} else {
// no operator → just return current value
result = numbers[1];
isTotal = false;
calcDisplay.value = result;
numbers[1] = undefined;
isFresh = true;
return;
}

calcDisplay.value = result;

// keep result as first number, reset second + operator
numbers[0] = result;
numbers[1] = undefined;
operator = "";
isTotal = true;
}

plusMinus.addEventListener("click", negateNumber);
function negateNumber() {
let result = Number(calcDisplay.value) * -1;
calcDisplay.value = result;
}
percent.addEventListener("click", percentage);
function percentage() {
if (numbers[0] === undefined || numbers[0] === 0) {
calcDisplay.value = 0;
} else {
let point = calcDisplay.value / 100;
calcDisplay.value = numbers[0] * point;
}
}< /code>
< /div>
< /div>
< /p>
Я знаю, что могут быть больше потенциальных проблем, так как я еще не закончил отладку моего кода, но давайте сначала сосредоточимся на проблеме, которую я указал выше. Если вам нужна дополнительная информация, просто спросите, и я дам вам вам. Спасибо!

Подробнее здесь: https://stackoverflow.com/questions/797 ... ult-is-300