<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <title></title> <script src="jquery-3.5.1.min.js" type="text/javascript" charset="utf-8"></script> <script type="text/javascript"> // 入口函數 $(document).ready(function() { // 獲取元素 根據標籤名 var jqButton = $("button"); var jqDiv = $("div"); // 綁定事件 jqButton.click(function() { jqDiv.show(); }); }); </script> <style type="text/css"> div { background-color: red; height: 20px; margin: 10px; display: none; } </style> </head> <body> <button>顯示盒子和設置內容</button> <div id=""> </div> <div id=""> </div> <div id=""> </div> <div id=""> </div> <div id=""> </div> </body> </html>