[removed] Find key and its value in JSON

Question

I have a JSON object that is returned in different ways, but always has key. How can I get it?

E.g.

\"Records\": {
    \"key\": \"112\"
         


        

Answer 1

You could use an iterative and recursive approach for getting the object with key in it.

function getKeyReference(object) {
    function f(o) {
        if (!o || typeof o !== 'object') {
            return;
        }
        if ('key' in o) {
            reference = o;
            return true;
        }
        Object.keys(o).some(function (k) {
            return f(o[k]);
        });
    }

    var reference;
    f(object);
    return reference;
}

var o1 = { Records: { key: "112" } },
    o2 = { Records: { test: { key: "512" } } },
    o3 = { Records: { test: { test2: [{ key: "334" }] } } };

console.log(getKeyReference(o1));
console.log(getKeyReference(o2));
console.log(getKeyReference(o3));