javascript - 使用Node.JS，如何将JSON文件读入（服务器）内存？(Using Node.JS, how do I read a JSON file into (server) memory?)

Question

Background(背景)

I am doing some experimentation with Node.js and would like to read a JSON object, either from a text file or a .js file (which is better??) into memory so that I can access that object quickly from code.(我正在对Node.js进行一些实验，并希望从文本文件或.js文件（更好的??）中读取JSON对象到内存中，以便我可以从代码中快速访问该对象。)

I realize that there are things like Mongo, Alfred, etc out there, but that is not what I need right now.(我意识到那里有Mongo，Alfred等东西，但这不是我现在所需要的。)

Question(题)

How do I read a JSON object out of a text or js file and into server memory using JavaScript/Node?(如何使用JavaScript / Node从文本或js文件和服务器内存中读取JSON对象？)

  ask by Matt Cashatt translate from so

Answer 1

Sync:(同步：)

var fs = require('fs');
var obj = JSON.parse(fs.readFileSync('file', 'utf8'));

Async:(异步：)

var fs = require('fs');
var obj;
fs.readFile('file', 'utf8', function (err, data) {
  if (err) throw err;
  obj = JSON.parse(data);
});