Question

我有一个名为data.json的文件，其数据如下所示。它来自firebase数据库。

[
     "-L1PW1Gt_34w1xb32BK5" : {
  "Article_Headline" : "Mobay flood victims receive help from ministry",
  "Article_Image_URL" : "https://www.wefornews.com/wp-content/uploads/2017/01/news-3.jpg",
  "Article_Published_Date" : "Wed, 27 Dec 2017 23:02:53 GMT",
  "Article_URL" : "http://www.jamaicaobserver.com/latestnews/Mobay_flood_victims_receive_help_from_ministry?profile=1228",
  "Category" : "riots,",
  "Location" : "Jamaica",
  "Source_Name" : "jamaica observer",
  "Tags" : "SocialSecurity,LabourParty,MontegoBay,Horsepower,JIS,Jamaica,USRoute36,AndrewHolness"
},
]

我希望我的数据看起来像这样

 {
     "Article_Headline" : "Mobay flood victims receive help from ministry",
     "Article_Image_URL" : "https://www.wefornews.com/wp-content/uploads/2017/01/news-3.jpg",
     "Article_Published_Date" : "Wed, 27 Dec 2017 23:02:53 GMT",
     "Article_URL" : "http://www.jamaicaobserver.com/latestnews/Mobay_flood_victims_receive_help_from_ministry?profile=1228",
     "Category" : "riots,",
     "Location" : "Jamaica",
     "Source_Name" : "jamaica observer",
     "Tags" : "SocialSecurity,LabourParty,MontegoBay,Horsepower,JIS,Jamaica,USRoute36,AndrewHolness"
     "key": "-L1PW1Gt_34w1xb32BK5" 
   }

可以使用哪些代码来产生这样的结果？

以下是我的代码无效

var http = require('http');
var fs = require('fs');
var obj = fs.readFileSync('./data.json', 'utf8');


function snapshotToArray(obj) {
var returnArr = [];

obj.forEach(function(childSnapshot) {
    var item = childSnapshot.val();
    item.key = childSnapshot.key;

    returnArr.push(item);
});

return returnArr;
};

console.log(snapshotToArray(obj));

Answer 1

通常，鉴于JSON有效：

import fs from 'fs';
const obj = JSON.parse(fs.readFileSync('./data.json', 'utf8'));
const data_to_keep = obj.the_key_of_data_to_keep;
delete obj.the_key_of_data_to_keep;

现在，属性the_key_of_data_to_keep已被删除，但您仍然可以通过data_to_keep引用其值，例如，您可以在obj中的某处插入。

读取和编辑Firebase数据库JSON文件[Nodejs]

1 个答案: