<!doctype html> <html> <head> <meta charset="utf-8"> <script type="text/javascript" src = "../libs/jquery-3.1.1.min.js"></script> <script type="text/javascript" src = "../libs/popper.min.js"></script> <script type="text/javascript" src = "../libs/bootstrap.min.js"></script> <link rel="stylesheet" href="../libs/bootstrap.min.css"> <title>無標題文檔</title> </head> <style> .row{ border: 1px solid red; } </style> <body> <div class="row"> <div class="col-xl-12"> <input type="text" id = "one"> </div> </div> <div class="row" style="background-color: red;width: 40%; visibility: visible" id = "two"> <div class="col-xl-12"> <span>1</span> <br> <span>2</span><br> <span>3</span> </div> </div> <div class="row"> <div class="col-12" style="background-color: aqua"> <span>111</span> <br> <span>111</span> <br> <span>111</span> <br> <span>111</span> </div> </div> </body> </html> <script> $(document).ready(function(){ $("#one").click(function(){ var a = $("#two").css("visibility"); if(a == "visible"){ $("#two").css("visibility","hidden"); }else{ $("#two").css("visibility","visible"); } }); }); </script>