Search recursively for value in object by property name

by

You could use Object.keys and iterate with Array#some.

function findVal(object, key) {
    var value;
    Object.keys(object).some(function(k) {
        if (k === key) {
            value = object[k];
            return true;
        }
        if (object[k] && typeof object[k] === 'object') {
            value = findVal(object[k], key);
            return value !== undefined;
        }
    });
    return value;
}

var object =  { photo: { progress: 20 }};
console.log(findVal(object, 'progress'));

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