如何将数组值联接为键以获取jSON对象值

Question

I have been working on a function that loops through a JSON object recursively, and want to use each key it finds as the class value of an element to change the .text value of that element in jQuery. So, far so good, however, as I am able to get the Keys recursively as well, I'm struggling on finding a way to input all of those keys to get each json objects values:

function eachRecursive(obj, aKey)
{
    aKey = aKey === null ? '' : aKey;

    for (var k in obj)
    {
        if (typeof obj[k] == "object" && obj[k] !== null)
        {
            aKey += k + '_';
            eachRecursive(obj[k], aKey);
        }
        else
        {
            if (obj.hasOwnProperty(k))
            {
                console.log(obj[k]);

                if ($('.player_' + aKey + k).length)
                {
                    var props = aKey.split('_');
                    props.clean("");



                    $('.player_' + aKey + k).text(obj[k]);
                }
            }
            // might not even need this.
            aKey = '';
        }
    }
}

So, text(obj[k]) isn't going to work here since the json is looping through objects inside objects recursively.

So, aKey is a string that gets used to check if the class exists (should be appending each key of the json object into it. Than should check if exists, if it does exist, should plug in the value into the .text of that element.

But what I'm sruggling here with is how to get the value from all of the keys that get plugged into an array called, props . So I will need to use each value in the array as keys for obj object to get the corresponding json value.

Can someone please help me here?

The .clean prototype added to Array just simply removes any empty values in the array. Specifically the last array index (since it splits on _ ).

How to pass array values into obj to get the json value?

For Example, if:

var props = ['name', 'first', 'last'];

// How to do this so we can get the value?
obj['name']['first']['last'][k]

Answer 1

Iterate over the props array and lookup the value in turn using bracket notation.

var value = obj;
for (var i = 0; i < props.length; i++) {
    value = value[props[i]];
}
value = value[k];