Find Closest Number Match in an array

Closest Match

var numberArray = [1,3,6,15,25,50]; 
var testValue = 19;
var fn = closestMatch(numberArray, testValue);
alert(fn);



function closestMatch(numbers, value){
			var closestValue, smallestDiff, absoluteDiff
			var len = numbers.length;
			closestValue = smallestDiff = 99999;
			
			for (var i = 0; i < len; ++i) 
			{
				absoluteDiff = numbers[i] - value;
				absoluteDiff = (absoluteDiff < 0)? -absoluteDiff: absoluteDiff; //Math.abs
				
				if (absoluteDiff  < smallestDiff  ) 
				{
					smallestDiff = absoluteDiff
					closestValue = numbers[i];	
				}
			}
			
			return  closestValue; 
		}