Add/change values in Object Javascript

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I have an object named clients.

var clients = {"username" : test, "socket": asdasdkje3sf};

But I want to add some more clients. If I add an client on the following way:

clients = {
  "username" : username,
  "socket": socket.id
};

It gets overwritten every time I add a new value. I have tried it on this way:

clients += {
  "username" : username,
  "socket": socket.id
};

If I do console.log(clients) it seems to work but it returns [object][object][object][object].

How can I read the objects? And is this the best approach to do this?

Thank you in advance!


How can I read the objects? And is this the best approach to do this?

Use an array, instead of an object.

var clients = [{"username" : test, "socket": asdasdkje3sf}];

Instead of adding via ++, use push

clients.push({
  "username" : username,
  "socket": socket.id
});

How To Create, Modify, and Loop through Objects in JavaScript , Adding and Modifying Object Properties. In order to add a new property to an object, you would assign a new value to a property with the  You could also create something that would be similar to a value object (vo); SomeModelClassNameVO.js; function SomeModelClassNameVO(name,id) { this.name = name; this.id = id; } Than you can just do; var someModelClassNameVO = new someModelClassNameVO('name',1); console.log(someModelClassNameVO.name);


You need to use a array data structure where you can push each object for clients. The way you are doing is incorrect as it concatenate the object with another object which result in invalid JSON object.

var clients = [];
clients.push({
     "username" : 'username1',
     "socket": 'socket.id1'
});


clients.push({
  "username" : 'username2',
  "socket": 'socket.id2'
});

console.log(clients);

How to change value of object which is inside an array using , png" }, { value: "sizzlejs", label: "Sizzle JS", desc: "a pure-JavaScript CSS selector engine", icon: "sizzlejs_32x32.png" } ];. For example, I want to change the desc  The Object.values() method returns an array of a given object's own enumerable property values, in the same order as that provided by a forin loop (the difference being that a for-in loop enumerates properties in the prototype chain as well). The source for this interactive example is stored in a GitHub repository.


You probably want an array of objects (clients).

var clients = [{"username" : test, "socket": asdasdkje3sf}];

This way you can easily push new clients to it.

var newClient = {"username": "another name", "socket": "foobar"};
clients.push(newClient);

push() is an array method provided by JavaScript.

Working with objects, Like all JavaScript variables, both the object name (which could be a normal adds a property color to car1, and assigns it a value of "black. Properties are the most important part of any JavaScript object. Properties are the values associated with a JavaScript object. A JavaScript object is a collection of unordered properties. Properties can usually be changed, added, and deleted, but some are read only.


To read or display and object use,

console.log(clients.username + "|" + clients.socket)

Add to above answers to add objects to an array, you can also use concat instead push if you are planning to merge more than two arrays. The difference is 'push' updates the same array, 'contact' merges and returns a new array

Object.values(), The Object.values() method returns an array of a given object's own enumerable property To add compatible Object.values support in older environments that do not natively support it, Update compatibility data on GitHub  Transforming objects. Objects lack many methods that exist for arrays, e.g. map, filter and others. If we’d like to apply them, then we can use Object.entries followed Object.fromEntries: Use Object.entries(obj) to get an array of key/value pairs from obj. Use array methods on that array, e.g. map.


Objects, by the key. It's easy to find a file by its name or add/remove a file. get property values of the object: alert ( user . name ) ; // John alert ( user . age ) ; // 30 Then, if we later use the other key ( user ) we would see changes. JavaScript is designed on a simple object-based paradigm. An object is a collection of properties, and a property is an association between a name (or key) and a value. A property's value can be a function, in which case the property is known as a method. In addition to objects that are predefined in the browser,


Writing a function to add or modify an existing object inside an array , I am aware that JavaScript is not the same, but I feel that this could be further refactored. addItem = function(id, items)  The native JavaScript object has no push() method. To add new items to a plain object use this syntax: element[ yourKey ] = yourValue; On the other hand you could define element as an array using


Data Structures: Objects and Arrays :: Eloquent JavaScript, The push method adds values to the end of an array, and the pop method does the You can change their properties, causing a single object value to have  The values are written as name:value pairs (name and value separated by a colon). JavaScript objects are containers for named values called properties or methods. Object Definition