Exploring the world of JSON and JavaScript data structures

Can someone provide some clarification please?

var a = '{"item":"earth", "color":"blue", "weight":920}';

Is the data type of a a string or an array ?

var b = JSON.parse(a);

What is the data type of b - an object or an array ?

Answer №1

x represents a string value while y stands for an object instance

var x = '{"item":"moon", "color":"silver", "weight":560}';
var y = JSON.parse(x);
console.log(typeof x); // string
console.log(typeof y); // object

If you need to convert it into an array, you can easily achieve this by using JSON.parse(x). After doing so, y will be an object and you can proceed with:

var z = Object.entries(y);
console.log(z);

Subsequently, z will hold your array.

It is important to note that z will consist of arrays within the main array structure:

[ [ 'item', 'moon' ], [ 'color', 'silver' ], [ 'weight', 560 ] ]

Assuming you desire something different, you can use the following approach:

var arr = [];
for (let i in y) {
   arr[i] = y[i];
}
console.log(arr);

[ item: 'moon', color: 'silver', weight: 560 ]

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