摘要: <button type="button" id="btn">按钮点击</button> <script type="text/javascript">var btn = document.getElementById("btn"); var flag = true; btn.addEventLis 阅读全文
posted @ 2022-02-09 14:37 奔跑的前端猿 阅读(259) 评论(0) 推荐(0) 编辑