1、path.resolve(ag1,ag2,...)
path.resolve返回當前環境所在路徑拼接參數字符串所得到的絕對路徑,其中參數可以有多個
const path = require('path');
path.resolve('/foo/bar', './baz')
// returns '/foo/bar/baz'
path.resolve('/foo/bar', '/tmp/file/')
// returns '/tmp/file'
path.resolve('wwwroot', 'static_files/png/', '../gif/image.gif')
// if the current working directory is /home/myself/node,
// this returns '/home/myself/node/wwwroot/static_files/gif/image.gif'
2、path.join(ag1,ag2,...)
const path=require('path');
path.join('a','b');
//返回 a\b
path.join(__dirname,'c','main.js')
//返回 D:\c\main.js ,__dirname表示當前運行環境絕對路徑
//path.join()方法拼接路徑,並返回該路徑,結合__dirname可以達到path.resolve()方法同樣的效果