<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <input id="inp1" type="text" > <!-- 按钮--> <button id="btn1">交换内容</button> <input id="inp2" type="text" > </body> <script> //点击按钮出发的函数 document.getElementById("btn1").onclick = function (){ } </script>
