[NodeJS 文章收集] NodeJS accessing file with relative path

Source From Here
Question
It seemed like a straight forward problem. But I am not able to crack this. Within helper1.js I would like to access foobar.json (from config/dev/)

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1. root  
2.   -config  
3.    --dev  
4.     ---foobar.json  
5.   -helpers  
6.    --helper1.js  

Any help here would be great.

How-To
You can use the path module to join the path of the directory in which helper1.js lives to the relative path of foobar.json. This will give you the absolute path to foobar.json:

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1. var fs = require('fs');  
2. var path = require('path');  
3.   
4. var jsonPath = path.join(__dirname, '..', 'config', 'dev', 'foobar.json');  
5. var jsonString = fs.readFileSync(jsonPath, 'utf8');