JavaScript recursive search in JSON object

Question

I am trying to return a specific node in a JSON object structure which looks like this

{
    \"id\":\"0\",
    \"children\":[
        {
            \"id\":\"         


        

Answer 1

I use the following

var searchObject = function (object, matchCallback, currentPath, result, searched) {
    currentPath = currentPath || '';
    result = result || [];
    searched = searched || [];
    if (searched.indexOf(object) !== -1 && object === Object(object)) {
        return;
    }
    searched.push(object);
    if (matchCallback(object)) {
        result.push({path: currentPath, value: object});
    }
    try {
        if (object === Object(object)) {
            for (var property in object) {
                if (property.indexOf("$") !== 0) {
                    //if (Object.prototype.hasOwnProperty.call(object, property)) {
                        searchObject(object[property], matchCallback, currentPath + "." + property, result, searched);
                    //}
                }
            }
        }
    }
    catch (e) {
        console.log(object);
        throw e;
    }
    return result;
}

Then you can write

searchObject(rootNode, function (value) { return value != null && value != undefined && value.id == '10'; });

Now this works on circular references and you can match on any field or combination of fields you like by changing the matchCallback function.