JavaScript 真正的体验DOM操作
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title></title> 6 </head> 7 <body> 8 <input type="button" value="弹窗" id="bt"/> 9 <script> 10 document.getElementById("bt").onclick = function () { 11 alert("哈哈"); 12 }; 13 </script> 14 </body> 15 </html>