转自:https://www.jb51.net/article/77676.htm
1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2 <html> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5 <title></title> 6 </head> 7 <body> 8 <script type="text/javascript"> 9 var fun = function(){ 10 this.add = function(num1,num2){ 11 return num1+num2; 12 } 13 } 14 var p = new fun(); 15 alert(p.add(2,3)); 16 </script> 17 </body> 18 </html>