CODEWITHSUNDEEP
javascript
Randomblue
Randomblue

Reputation: 116443

JavaScript: Declare variable inside object declaration

Is it possible to declare variables in JavaScript inside an object declaration? I'm looking for something similar to

var myObject = {
    myLabel: (var myVariable)
};

instead of having to write

var myVariable;
var myObject = {
    myLabel: myVariable
};

EDIT

I want this in the context of Node.JS. This is what I have:

var server = {};
var database = {};
var moar = {};

module.exports = {
    server: server,
    database: databse,
    moar: moar
};

doStuffAsync(function callback() {
    // Populate variables
    server = stuff();
    database = stuff2();
});

Upvotes: 8

Views: 24501

Answers (2)

palerdot
palerdot

Reputation: 7652

If you want to scope a variable inside an object you can use IIFE (immediately invoked function expressions)

var myObject = {
    a_variable_proxy : (function(){ 
        var myvariable = 'hello'; 
        return myvariable; 
    })()
};

Upvotes: 9

Jan Hančič
Jan Hančič

Reputation: 53929

You can assign a value to a key directly.

If you now have:

var myVariable = 'some value';
var myObject = {
    myLabel: myVariable
};

you can replace it with:

var myObject = {
    myLabel: 'some value'
};

Upvotes: 3

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