path操作

Posted 2020-10-31 anthonyliu

path模块提供了一些工具函数，用于处理目录的路径。

1.获取路径的扩展名

var extname = require(‘path‘).extname

2.通过当前目录获取想要的目录,用relative函数。

var path = require("path");
function test(){
    var xx= path.relative(‘/‘, ‘../../‘);
    console.log(xx);    
 }
test();  //Users/anthonyliu

 3.多种目录操作

var path = require("path");

console.log("__dirname"+__dirname);      // /Users/anthonyliu/gfloan-hera/conf
var folder = path.resolve(__dirname, "../");
console.log("folder="+folder);           // /Users/anthonyliu/gfloan-hera
var folderName = path.basename(folder);
console.log("folderName="+folderName);   //gfloan-hera
var folderDir = path.dirname(folder);   
console.log("folderDir="+folderDir);     // /Users/anthonyliu

var confFolder = path.resolve(folderDir, "conf/" + folderName + ".conf");
console.log("confFolder="+confFolder);   // /Users/anthonyliu/gfloan-hera/conf/default

4.提供不同操作系统的文件分隔符

path.sep //POSIX 为“/”;window  系统为\\

5.使路径正常化：

normalize(‘.‘ + sep + path)            //来源于send包