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for (var i=0; i < 10; i++){ doSomething(i);}alert(i); //10 |
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<html> <head></head> <body> <script type="text/javascript"> var global_one = "I am global"; function fun(){ global_two = "I am global too"; var local_one = "I am local"; } alert(global_one); // "I am global" //alert(global_two);// error //alert(local_one);//error fun(); alert(global_one); // "I am global" alert(global_two);// "I am global" //alert(local_one);//error </script> </body></html> |
原文：http://www.cnblogs.com/Jacklovely/p/6388475.html