# # `diffKeys()`

The diffKeys method compares the collection against another collection or a plain object based on its keys. This method will return the key / value pairs in the original collection that are not present in the given collection:

    const collection = collect({
      a: "a",
      b: "b",
      c: "c",
      d: "d"
    });

    const diff = collection.diffKeys({
      b: "b",
      d: "d"
    });

    diff.all();

    //=> { a: 'a', c: 'c' }

View source on GitHub