Traverse through multi-dimentional object

问题:

I have a multi-dimensional object:

var obj = {
    prop: {
        myVal: "blah",
        otherVal: {
             // lots of other properties
        },
    },
};

How would one traverse the entire object, without knowing any of the property names or the number of "dimensions" in the object?

There are a couple other questions on SO that are related to the topic:

Traverse through Javascript object properties
javascript traversing through an object

The problem is that both answers are not quite what I am looking for, because:

a) The first link only iterates through the first layer in the object.
b) The second answer requires you to know the names of the object's keys.

回答1:

Recursion:

function doSomethingWithAValue(obj, callback) {
  Object.keys(obj).forEach(function(key) {
    var val = obj[key];
    if (typeof val !== 'object') {
      callback(val);
    } else {
      doSomethingWithAValue(val, callback);
    }
  });
}