for...in 语句

对应于一个对象的每个，或一个数组的每个元素，执行一个或多个语句。 for (variable in ) statements 参数 variable 必选项。一个变量，它可以是

Network Working Group H. Tschofenig Request for Comments: 4081

Network Working Group A. Farrel Request for Comments: 4041

Network Working Group M. Richardson Request for Comments: 4025

Network Working Group S. Olson Request for Comments: 3266 Microsoft Updates: 2327 G. Camarillo Cat

Network Working Group D. Senie Request for Comments: 2644 Amaranth Networks Inc. Updates: 1812 Aug

Network Working Group S. Bradner Request for Comments: 2119 Harvard University BCP: 14 March 1997

Network Working Group K. McCloghrie Request for Comments: 1503 Hughes LAN Systems M. Rose Dover

Network Working Group Bob Thomas Request for Comments: #470

Network Working Working Group R. Callon Request for Comments: 1195 Digital Equipment Corporation