正则表达式：取字符串中第三个斜杆后的字符串

Question

正则表达式：取字符串中第三个斜杆后的字符串？求教各位大虾，该如何写？

Answer 1

[code="java"]
String str = "a/b/c/def/dagdsgf/".replaceAll("^(?:[^/]*/){3}(.*)$","$1");
System.out.println(str); // def/dagdsgf/
[/code]
[code="js"]
var str = "a/b/c/def/dagdsgf/".replace(/^(?:[^/]*\/){3}(.*)$/,"$1")
alert(str) // def/dagdsgf/
[/code]