<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <div id="'div1" onclick="func1()">hello world <p class="ppp">hello p</p> </div> <script> var obj = document.getElementsByClassName("ppp")[0]; obj.onclick = function(){ alert(123); } function func1(){ alert("func1"); } </script> </body> </html>