创建.json文件并使用JavaScript将数据存储在其中? [英] Creating .json file and storing data in it with JavaScript?

问题描述

我有一个在node.js上运行的后端JavaScript文件.它使用async.series做一些事情，并产生最终字典(对象)，以及我在前端需要的数据.我现在如何读取.json文件并将其转换为JavaScript对象，但是我不知道如何使用后端JavaScript创建.json文件以及如何在其中存储一些数据.

I have a back-end JavaScript file that runs on node.js. It do some stuff using async.series and yields the final dictionary(object) with data I need on my front-end. I now how to read a .json file and convert it into the JavaScript object, but I do not know create .json file with back-end JavaScript and how to store some data in it.

任何人都可以告诉我正确的方法.

Could anyone please tell me the right way to do this.

这是我需要转换并存储到.json文件的字典(对象).

Here is the dictionary(object) that I need to convert and store to the .json file.

var dict = {"one" : [15, 4.5],
            "two" : [34, 3.3],
            "three" : [67, 5.0],
            "four" : [32, 4.1]};

推荐答案

简单！您可以将其转换为JSON(作为字符串).

Simple! You can convert it to a JSON (as a string).

var dictstring = JSON.stringify(dict);

要在NodeJS中保存文件，

To save a file in NodeJS:

var fs = require('fs');
fs.writeFile("thing.json", dictstring);

此外，javascript中的对象使用冒号，而不等于:

Also, objects in javascript use colons, not equals:

var dict = {"one" : [15, 4.5],
        "two" : [34, 3.3],
        "three" : [67, 5.0],
        "four" : [32, 4.1]};

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