1 var path = require("path");
 2 //规范化路径
 3 var str = "a/b/c/../d/./../f/e/";
 4 var pathstr = path.normalize(str);
 5 console.log(pathstr);
 6 
 7 //将多个字符串路径组合成一个路径
 8 console.log(path.join(__filename,"a/b","c/d","../e"));
 9 
10 //resolve 解析成绝对路径
11 console.log(path.resolve("www","baidu","com"));
12 console.log(path.resolve("/www","fgg"));