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calculatrice js V2.0

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jfgiraud
2026-08-21 15:49:37 +02:00
parent d8cb626014
commit 455fffb933
5 changed files with 334 additions and 24 deletions
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calculatrice_basic.js
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class SimpleCalculator {
constructor(containerId) {
this.container = document.getElementById(containerId);
if (!this.container) return;
this.currentInput = "0";
this.previousInput = "";
this.operation = null;
this.init();
}
init() {
this.container.innerHTML = `
<div class="w-72 bg-slate-800 p-4 rounded-2xl shadow-xl select-none text-slate-100">
<!-- Écran avec une hauteur fixe (min-h) pour éviter qu'il ne rétrécisse -->
<div id="calc-screen" class="bg-slate-900 text-right p-4 rounded-xl mb-4 text-2xl font-mono tracking-wider overflow-hidden min-h-[4rem] flex flex-col justify-center">
<div id="calc-prev" class="text-xs text-slate-400 h-4"></div>
<div id="calc-current">0</div>
</div>
<!-- Clavier -->
<div class="grid grid-cols-4 gap-2">
<button data-action="clear" class="col-span-2 bg-red-600 hover:bg-red-500 p-3 rounded-xl font-bold transition">AC</button>
<button data-action="delete" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">⌫</button>
<button data-action="operator" data-value="/" class="bg-amber-600 hover:bg-amber-500 p-3 rounded-xl font-bold transition">÷</button>
<button data-action="number" data-value="7" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">7</button>
<button data-action="number" data-value="8" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">8</button>
<button data-action="number" data-value="9" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">9</button>
<button data-action="operator" data-value="*" class="bg-amber-600 hover:bg-amber-500 p-3 rounded-xl font-bold transition">×</button>
<button data-action="number" data-value="4" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">4</button>
<button data-action="number" data-value="5" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">5</button>
<button data-action="number" data-value="6" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">6</button>
<button data-action="operator" data-value="-" class="bg-amber-600 hover:bg-amber-500 p-3 rounded-xl font-bold transition">-</button>
<button data-action="number" data-value="1" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">1</button>
<button data-action="number" data-value="2" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">2</button>
<button data-action="number" data-value="3" class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">3</button>
<button data-action="operator" data-value="+" class="bg-amber-600 hover:bg-amber-500 p-3 rounded-xl font-bold transition">+</button>
<button data-action="number" data-value="0" class="col-span-2 bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">0</button>
<button data-action="number" data-value="." class="bg-slate-700 hover:bg-slate-600 p-3 rounded-xl font-bold transition">.</button>
<button data-action="calculate" class="bg-emerald-600 hover:bg-emerald-500 p-3 rounded-xl font-bold transition">=</button>
</div>
</div>
`;
this.prevScreen = this.container.querySelector("#calc-prev");
this.currentScreen = this.container.querySelector("#calc-current");
this.addListeners();
}
addListeners() {
this.container.addEventListener("click", (e) => {
const button = e.target.closest("button");
if (!button) return;
const action = button.getAttribute("data-action");
const value = button.getAttribute("data-value");
if (action === "number") {
this.appendNumber(value);
} else if (action === "operator") {
this.chooseOperation(value);
} else if (action === "calculate") {
this.compute();
} else if (action === "clear") {
this.clear();
} else if (action === "delete") {
this.deleteDigit();
}
this.updateScreen();
});
}
appendNumber(number) {
if (number === "." && this.currentInput.includes(".")) return;
if (this.currentInput === "0" && number !== ".") {
this.currentInput = number;
} else {
this.currentInput += number;
}
}
chooseOperation(op) {
if (this.currentInput === "") return;
if (this.previousInput !== "") {
this.compute();
}
this.operation = op;
this.previousInput = this.currentInput;
this.currentInput = "";
}
compute() {
let computation;
const prev = parseFloat(this.previousInput);
const current = parseFloat(this.currentInput);
if (isNaN(prev) || isNaN(current)) return;
switch (this.operation) {
case "+":
computation = prev + current;
break;
case "-":
computation = prev - current;
break;
case "*":
computation = prev * current;
break;
case "/":
computation = current === 0 ? "Erreur" : prev / current;
break;
default:
return;
}
this.currentInput = computation.toString();
this.operation = null;
this.previousInput = "";
}
clear() {
this.currentInput = "0";
this.previousInput = "";
this.operation = null;
}
deleteDigit() {
if (this.currentInput.length === 1) {
this.currentInput = "0";
} else {
this.currentInput = this.currentInput.slice(0, -1);
}
}
updateScreen() {
this.currentScreen.innerText =
this.currentInput === "" ? "0" : this.currentInput;
if (this.operation != null) {
this.prevScreen.innerText = `${this.previousInput} ${this.operation}`;
} else {
this.prevScreen.innerText = "";
}
}
}