我可以将json文件用作node.js中的模块吗

Question

I have a JSON module which contains empty containers like this:

{
    "files": {
        "rootNeeded":[],
        "folders":[],
        "files":[],
        "images":[],
        "text":[],
        "unknown":[]
    },
}

and I wonder if I can push data into this from another module simply by using array.push method. Something like ...

var myModule=require("./myJsonFile");
function(){
    some magic here...
    myModule.files.files.push(files);
}

and after this can I use this in a third node module like this...

//my third module
console.log(files.files)

in the end it will be like dynamic database each time when program called will be refreshed.

Answer 1

You can, however the changes you make will NOT be persisted. Also, if you use cluster , every process will have a different version of your object.

myJsonFile.json

{
  "files": {
    "rootNeeded": [],
    "folders": [],
    "files": [],
    "images": [],
    "text": [],
    "unknown": []
  }
}

mod1.js

var json = require('./myJsonFile');

function pushData() {
  json.files.files.push('test 1');
  json.files.files.push('test 2');
}

pushData();

mod2.js

var json = require('./myJsonFile');
require('./mod1');

console.log(json);

// { files: 
//   { rootNeeded: [],
//     folders: [],
//     files: [ 'test 1', 'test 2' ],
//     images: [],
//     text: [],
//     unknown: [] } }