find object in array search engine

findInArray.js

<script type="text/javascript">
	function findInArray(needle, haystack)
	{
		function isMatch(needle, haystack)
		{
			if (haystack == needle)
			{
				return true;
			}
			else if (typeof needle == 'object' && typeof haystack == 'object')
			{
				var match = true;
				for (var i in needle)
				{
					match = match && haystack.indexOf(needle[i]) >= 0;
				}
				return match;
			}
			else if (typeof haystack == 'object')
			{
				if (haystack.indexOf(needle) >= 0)
				{
					return true;
				}
				else
				{
					return false;
				}
			}
			
			return false;			
		}		
		
		var idx = false;
		var matches = [];
		var match = true;
		for (var i in haystack)
		{
			val = haystack[i];
			
			match = true;
			for (var key in needle)
			{
				if (typeof val[key] == 'undefined')
				{
					match = false;
					break;
				}
				
				match = match && isMatch(needle[key], val[key]);
				
				if (!match)
				{
					break;
				}								
			}
			
			if (match)
			{
				matches.push({'idx': i, 'val': val});
			}
		}
		
		return matches;		
	}
	
	function search(params)
	{
		console.debug(JSON.stringify(params), findInArray(params, haystack));
	}
	
	var haystack = [
		{'id': 1, 'name': 'Jimmy', 'sports': ['baseball','football']},
		{'id': 2, 'name': 'Jim', 'sports': 'football'},
		{'id': 3, 'name': 'Bryan', 'sports': 'soccer'},
		{'id': 4, 'name': 'Bobby'},
		{'id': 5, 'name': 'Dan', 'sports': 'soccer'}
	];
	
	search({'id': 2}, haystack);
	search({'name': 'Jim'});
	search({'sport': 'soccer'}, haystack);
	search({'sports': ['baseball','football']}, haystack);
</script>