<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <script src="js/jquery.js"></script> <script> $(function(){ $('#btnok').bind('click',function(){ $('div').each(function(i,item){ $(item).html('第'+(i+1)+'个div'); }); }); }); </script> </head> <body> <input type="button" id="btnok" value="each" /> <hr /> <div>div1</div> <div>dov2</div> <div>div3</div> </body> </html>