So what i'm trying to achieve is creating a json flat file to store user info where i'm stuck is that i don't know how to add new nested objects that are empty and then save the json file and reload it.
what i have in my *json* file is this.
{
"users" : {
"test" : {
},
"test1" : {
}
}
}
I'm trying to add as many new objects as i want to it. So for example.
{
"users" : {
"test" : {
},
"test1" : {
},
"test2" : {
},
"test3" : {
}
}
}
My server side Javascript
json.users.push = username;
fs.writeFile("./storage.json", JSON.stringify(json, null, 4) , 'utf-8');
delete require.cache[require.resolve('./storage.json')];
json = require("./storage.json");
With this code it does not write the file so when the require is done i end up with the same file and my json object ends up like this when i console.log it
{
"users": {
"test": {},
"test1": {},
"push": "test2"
}
}
Please do not remend some external module to solve something has simple as this. Also if any one can point me to a in depth json documentation that gets straight to the point with what i'm try to do it would be appreciated
So what i'm trying to achieve is creating a json flat file to store user info where i'm stuck is that i don't know how to add new nested objects that are empty and then save the json file and reload it.
what i have in my *json* file is this.
{
"users" : {
"test" : {
},
"test1" : {
}
}
}
I'm trying to add as many new objects as i want to it. So for example.
{
"users" : {
"test" : {
},
"test1" : {
},
"test2" : {
},
"test3" : {
}
}
}
My server side Javascript
json.users.push = username;
fs.writeFile("./storage.json", JSON.stringify(json, null, 4) , 'utf-8');
delete require.cache[require.resolve('./storage.json')];
json = require("./storage.json");
With this code it does not write the file so when the require is done i end up with the same file and my json object ends up like this when i console.log it
{
"users": {
"test": {},
"test1": {},
"push": "test2"
}
}
Please do not remend some external module to solve something has simple as this. Also if any one can point me to a in depth json documentation that gets straight to the point with what i'm try to do it would be appreciated
Share Improve this question asked Oct 5, 2015 at 3:07 DarkrumDarkrum 1,3831 gold badge12 silver badges28 bronze badges 2- 2 there is no such thing as JSON object. there's object, and there's JSON. it's the difference between a cake-recipe and a cake. there is no such thing cake-recipe-cake. – David Haim Commented Oct 5, 2015 at 3:12
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What do you think
json.users.pushdoes? – user663031 Commented Oct 5, 2015 at 4:03
1 Answer
Reset to default 3Use [] to access a dynamic key on the object
json.users[username] = {a: 1, b: 2}
Be careful naming your variable like that tho because json the way you're using it is not JSON. JSON is a string, not an object with keys.
See the below demo for distinction
var json = '{"users":{"test1":{},"test2":{}}}';
var obj = JSON.parse(json);
var newuser = 'test3';
obj.users[newuser] = {};
console.log(JSON.stringify(obj));
//=> {"users":{"test1":{},"test2":{},"test3":{}}}