1. for/in
遍历对象属性成员。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>TestJS</title> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> </head> <script type = "text/javascript"> function init() { var o = {x:1,y:2,z:3}; for(var s in o){ console.log(s);} } </script> <body onload=init()> sam </body> </html> <!DOCTYPE HTML PUBLIC "-//W3C//
