Check the console for goodness

    var fruit = [
                       { fruit: "apple", color: "red" },
                       { fruit: "orange", color: "orange" },
                       { fruit: "cherry", color: "red" },
                       { fruit: "grape", color: "green" },
                       { fruit: "strawberry", color: "red" },
                       { fruit: "lemon", color: "yellow" },
                       { fruit: "peach", color: "yellow" },
                       { fruit: "kiwi", color: "green" },
                       { fruit: "lime", color: "green" }
                     ];

                fruit.sort(function(a, b){
                   var colora=a.color.toLowerCase(), colorb=b.color.toLowerCase()
                   if (colora < colorb)
                    return -1
                   if (colora > colorb)
                    return 1
                   return 0
                  })
                  console.log(fruit);


                  fruit.sort(function(a, b){
                   var fruita=a.fruit.toLowerCase(), fruitb=b.fruit.toLowerCase()
                   if (fruita < fruitb)
                    return -1
                   if (fruita > fruitb)
                    return 1
                   return 0
                  })
                  console.log(fruit);