js evaluator

js/index.js

@@ -0,0 +1,19 @@
+const btn = document.getElementById('evaluate');
+const input = document.getElementById('input');
+const output = document.getElementById('output');
+
+btn.addEventListener('click', function() {
+	output.innerText = '';
+	const originalLog = console.log;
+	console.log = function(...args) {
+		output.innerText += args.join(' ') + '\n';
+		originalLog.apply(console, args);
+	};
+	try {
+		let result = eval(input.value);
+		if (result !== undefined) output.innerText += result;
+	} catch (e) {
+		output.innerText += 'Error: ' + e.message;
+	}
+	console.log = originalLog;
+});