Parsing JSON in Java without knowing JSON format in javascript

Question

Is there an equivalent in Javascript for this following functionality achieved through Java?

To be able to iterate through an simple to complex/ nested JSON structure without knowing the JSON format.

I am in need of this functionality to get hold of all the innermost keys and that hold a direct value and not object/array as its value.

In this fiddle, Object.keys() only gives the outermost keys. I want to be able to get (id, type)

console.log(Object.keys(x));

you can loop over a object properties without the use of keys — madalinivascu
– madalinivascu, Commented Jun 5, 2018 at 12:51
I have seen this answered on this site multiple times. Go look — bassxzero
– bassxzero, Commented Jun 5, 2018 at 12:51
Possible duplicate of Access / process (nested) objects, arrays or JSON — Louys Patrice Bessette
– Louys Patrice Bessette, Commented Jun 5, 2018 at 13:02

A. Llorente · Accepted Answer · 2018-06-05 13:07:28Z

1

You can build it yourself, just iterate the keys of the object recursively if it is an object, see this small example:

    const getAllPropertiesRecursively = (obj) => {
    const propertyKeys = [];
    Object.keys(obj).forEach(key => {
        const value = obj[key];
        if (value && !Array.isArray(value)) {
            if (value.toString() === '[object Object]') {
                propertyKeys.push(...getAllPropertiesRecursively(value));
            } else {
                propertyKeys.push({[key]: value}); // here you store the keys and values that are not array nor object
            }
        }
    });
    return propertyKeys;
}

So when you call this method like this:

getAllPropertiesRecursively({a:1, b:2, c: { d: 1}, e: [1,2,3,4], f: {g:2}});

You get an array like:

[{a: 1}, {b: 2}, {d: 1}, {g: 2}]

You can edit the line with the comment to store the data in the way you want

answered Jun 5, 2018 at 13:07

A. Llorente

1,1826 silver badges18 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

we bendthetrend Over a year ago

Consider this data : key array is empty : { "i": { "i1": [{ "id": "0001", "b": { "b1": [{ "d1": "t1", "coordinates": [19.291422,73.53197 ] }, { "d3": "t3", "d4": "t4" } ] }, "c": [{ "d5": "t5", "r1": ["1", "2", "3"] }, { "d6": "t6" } ] }, { "id": "0002", "b": { "b1": [{ "d1": "t1", "d2": "t2" }, { "d3": "t3", "d4": "t4" } ] }, "c": [{ "d5": "t5" }, { "d6": "t6" } ] } ] } }

A. Llorente Over a year ago

be careful with (typeof obj[property] == "object") because: typeof [] === 'object' // true typeof null === 'object' // true typeof new Date() === 'object' // true See: developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… In any case, I just gave you a snippet of what you could do, you can adapt it to your own needs.

Collectives™ on Stack Overflow

Parsing JSON in Java without knowing JSON format in javascript

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related