Añadidos juegos

piedra-papel-tijera/script.js

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+const userScoreSpan = document.getElementById('user-score');
+const computerScoreSpan = document.getElementById('computer-score');
+const resultDiv = document.getElementById('result');
+const choiceButtons = document.querySelectorAll('#choices button');
+const resetBtn = document.getElementById('reset-btn');
+
+let userScore = 0;
+let computerScore = 0;
+
+const choices = ['piedra', 'papel', 'tijera'];
+
+function computerPlay() {
+  const idx = Math.floor(Math.random() * 3);
+  return choices[idx];
+}
+
+function playRound(userChoice) {
+  const computerChoice = computerPlay();
+
+  let resultMsg = `Tu elección: ${emoji(userChoice)} ${capitalize(userChoice)}<br>
+                   Computadora: ${emoji(computerChoice)} ${capitalize(computerChoice)}<br>`;
+
+  if (userChoice === computerChoice) {
+    resultMsg += "<strong>¡Empate!</strong>";
+  } else if (
+    (userChoice === 'piedra' && computerChoice === 'tijera') ||
+    (userChoice === 'papel' && computerChoice === 'piedra') ||
+    (userChoice === 'tijera' && computerChoice === 'papel')
+  ) {
+    userScore++;
+    userScoreSpan.textContent = userScore;
+    resultMsg += "<strong>¡Ganaste esta ronda! 🎉</strong>";
+  } else {
+    computerScore++;
+    computerScoreSpan.textContent = computerScore;
+    resultMsg += "<strong>La computadora gana esta ronda.</strong>";
+  }
+
+  resultDiv.innerHTML = resultMsg;
+}
+
+function emoji(choice) {
+  if (choice === 'piedra') return '🪨';
+  if (choice === 'papel') return '📄';
+  if (choice === 'tijera') return '✂️';
+}
+
+function capitalize(word) {
+  return word.charAt(0).toUpperCase() + word.slice(1);
+}
+
+choiceButtons.forEach(btn => {
+  btn.onclick = () => playRound(btn.getAttribute('data-choice'));
+});
+
+resetBtn.onclick = () => {
+  userScore = 0;
+  computerScore = 0;
+  userScoreSpan.textContent = userScore;
+  computerScoreSpan.textContent = computerScore;
+  resultDiv.textContent = '';
+};