Discovering the value of a variable within an object using JavaScript

Question

Discovering the value of a variable within an object using JavaScript

Here is the code snippet I am working with:

 for (var i = 0; i<ke.length; i++)
        {

            var ar = ke[i];
            var temp = {ar :(n[a])}; //how to resolve a
            console.log(temp);

        }

The 'temp' object is supposed to contain a list of column names(key) and values, but it is taking 'a' as a literal. How can I fix this? The 'n[a]' represents a JSON object where 'a' is the column name.

 Current output: temp = {a:["some", "value"] }

Desired output: {"valueOfA" : ["some", "value"] }

I come from a Java background, so JavaScript seems unfamiliar to me. Any help would be greatly appreciated. Thank you in advance.

javascript scope

Answer 1

Answer №1

First, create an empty object called temp and assign a value to its key according to the following:

var temp = {};
temp[a] = // the value you want to store

This approach ensures that the value contained in a is stored as the key, rather than simply using a as a key itself.

Answer 2

First, create an empty object called temp and assign a value to its key according to the following:

var temp = {};
temp[a] = // the value you want to store

This approach ensures that the value contained in a is stored as the key, rather than simply using a as a key itself.

Answer 3

Answer №2

Behold,

Take a gander at this javascript object that's as empty as a vacuum:

var foo = {};

Now feast your eyes on this javascript object with the key 'bar' and an empty string as its value:

var foo = {bar:""};

If you desire to retrieve that empty string (or any other data type you may have put in there, like an array or number), simply access it like so:

console.log(foo.bar);

In your specific scenario, you can obtain the value under 'bar', or you can initialize 'foo' as:

var foo = (data[bar]);

As such, when you log 'foo', the array will be readily available for your perusal.

Answer 4

Behold,

Take a gander at this javascript object that's as empty as a vacuum:

var foo = {};

Now feast your eyes on this javascript object with the key 'bar' and an empty string as its value:

var foo = {bar:""};

If you desire to retrieve that empty string (or any other data type you may have put in there, like an array or number), simply access it like so:

console.log(foo.bar);

In your specific scenario, you can obtain the value under 'bar', or you can initialize 'foo' as:

var foo = (data[bar]);

As such, when you log 'foo', the array will be readily available for your perusal.

Discovering the value of a variable within an object using JavaScript

Answer №1

Answer №2

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