<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> </head> <body> <div> <ul class="ul0"> <li>aaa</li> <li>bbb</li> <li>ccc</li> <li>ddd</li> </ul> </div> </body> </html> <script src="jzzqmobile/js/jquery.min.js"></script> <script> /*输出 each:aaa each:bbb each:ccc each:ddd */ $('.ul0 li').each(function(){ console.log('each:'+$(this).text()) }) /*输出 map:aaa map:bbb map:ccc map:ddd */ $('.ul0 li').map(function(){ console.log('map:'+$(this).text()) }) /*输出 1 2 3 4 */ var arr=[{num:1},{num:2},{num:3},{num:4}] $.each(arr,function(){ console.log(this.num+'###') }) /*输出 Object {num: 1} Object {num: 2} Object {num: 3} Object {num: 4} */ $.map(arr,function(item){ console.log(item) }) </script>