问题展示tt.question {tttcursor: pointer;tttfont-weight: bold;tt}tt.answer {tttdisplay: none;tttmargin-left: 20px;tt}常见问题问题1答案1问题2答案2问题3答案3ttvar questions = document.querySelectorAll('.question');ttfor (var i = 0; i < questions.length; i++) {tttquestions[i].addEventListener('click', function() {ttttvar answer = this.nextElementSibling;ttttif (answer.style.display === 'block') {tttttanswer.style.display = 'none';tttt} else {tttttanswer.style.display = 'block';tttt}ttt});tt}
