Question

Suppose I have an object like following:

var Obj = {
             a: {
                   name: 'X',
                   age: 'Y',
                   other: {
                             job: 'P',
                             location: {
                                          lat: XX.XXXX,
                                          lng: YY.YYYYY,
                                          .........
                                       }
                          }
                }
          };

My objective: I need a method that will check existence of a key and return its immediate parent object for any level of nesting.

Example If I search for lat that method will return location object, if I search for job it will return other and so on.

Please help.
Thanks….

Answer 1

Try this:

function findObjectWithProperty(obj, term){
    if (typeof obj == 'object'
        && Object.prototype.toString.call(obj) !== '[object Array]'){
        for(var prop in obj){
            if (obj.hasOwnProperty(prop)){
                if (prop==term)
                    return obj;
                var result = findObjectWithProperty(obj[prop], term);
                if (result != null)
                    return result;
            }
        }
    }
    return null;
}

Use:

var location = findObjectWithProperty(Obj, 'lat');
var other = findObjectWithProperty(Obj, 'job');