Sort an array without changing place of negative numbers in Javascript

Sort an array without changing place of negative numbers in Javascript.js

var arr = [999,-1,4,89,6,7,-99,-90]
for (var i = 0; i < arr.length ; i++){
  for (var j = i; j< arr.length; j++){
    if(arr[i] >= 0 && arr[j] >= 0 && arr[i]> arr[j]){
      temp = arr[i]
      arr[i]=arr[j]
      arr[j]=temp
    }
    else if(arr[i]<0) i++
  }
}
console.log(arr);
/*Output:
[
   4,  -1,   6,   7,
  89, 999, -99, -90
]*/

ES5 JS code with bubble sort technique.