Closest value find from array object element using javascript

How to find user_value closet value from this array? Hear is user_value variable according to this i need find out closest value from array.

var user_value = 5500;
var array = [ 

    { _id: 5809e269d60f577ae35f6add,
      coins: 1000,
      is_active: 1,
      iconId: 4 },
    { _id: 5809e269d60f577ae35f6ade,
      coins: 2000,
      is_active: 1,
      iconId: 5 },
    { _id: 5809e269d60f577ae35f6adf,
      coins: 5000,
      is_active: 1,
      iconId: 6 },
    { _id: 5809e269d60f577ae35f6ae0,
      coins: 7000,
      is_active: 1,
      iconId: 7 },
    { _id: 5809e269d60f577ae35f6ae1,
      coins: 10000,
      is_active: 1,
      iconId: 8 },
    { _id: 5809e269d60f577ae35f6ae2,
      coins: 15000,
      is_active: 1,
      iconId: 9 } ];

via Jay Jariwala