CalculadoraHTML/Script.js at main · patrick-an9/CalculadoraHTML · GitHub

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Script.js

let display = document.getElementById('display');

function clearDisplay() {
    display.innerText = '0';
}

function appendNumber(number) {
    if (display.innerText === '0') {
        display.innerText = number;
    } else {
        display.innerText += number;
    }
}

function appendOperator(operator) {
    const lastChar = display.innerText.slice(-1);
    if ('+-*/'.includes(lastChar)) {
        display.innerText = display.innerText.slice(0, -1) + operator;
    } else {
        display.innerText += operator;
    }
}

function deleteLast() {
    display.innerText = display.innerText.slice(0, -1) || '0';
}

function calculate() {
    try {
        display.innerText = eval(display.innerText) || '0';
    } catch {
        display.innerText = 'Error';
    }
}