I want to determine (using JQuery) if my `$(this).data` contains an array with a member=x. `$(this).data` looks like this:

```
  'key1':[1,28,3,4],
  'key2':[5,6,7,8,9],
  'key3':[15,32]

```

Normally, I'd figure on looping through the keys and checking to see if each value array contained x, but JQuery has all these weird and wonderful functions, I thought there might be an easier way.