摘要: 1.通过id获取 <div id="btn"> <script> let btn=document.getElementById('btn') </script><div>2.通过class获取 <div class="btn"> <script> let btn=document.getEleme 阅读全文
posted @ 2021-12-09 11:07 sjn2002 阅读(13) 评论(0) 推荐(0)
摘要: 1.内部引入 <!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title></head><body></body></html> <script type="text/javascript">ale 阅读全文
posted @ 2021-12-09 10:35 sjn2002 阅读(19) 评论(0) 推荐(0)