MediaWiki:Common.js
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document.addEventListener("DOMContentLoaded", function() {
const container = document.getElementById("calcContainer");
if (!container) return;
container.innerHTML = `
<div style="margin:10px 0;">
<label>Num1: <input type="number" id="num1" value="0" style="width:60px;"></label>
<label>Num2: <input type="number" id="num2" value="0" style="width:60px;"></label>
<label>Operation:
<select id="op">
<option value="+">+</option>
<option value="-">-</option>
<option value="*">*</option>
<option value="/">/</option>
</select>
</label>
<button id="calcButton">Calculate</button>
</div>
<div>Result: <span id="result">0</span></div>
`;
document.getElementById("calcButton").addEventListener("click", function() {
const a = parseFloat(document.getElementById("num1").value);
const b = parseFloat(document.getElementById("num2").value);
const op = document.getElementById("op").value;
let result;
if (isNaN(a) || isNaN(b)) {
result = "Enter valid numbers";
} else {
switch(op) {
case "+": result = a + b; break;
case "-": result = a - b; break;
case "*": result = a * b; break;
case "/": result = b !== 0 ? a / b : "∞"; break;
default: result = "Error";
}
}
document.getElementById("result").textContent = result;
});
});