Selection Sort in Javascript

index.js

function selectionSort(items)
{
  var  itemLen = items.length;
  var min; 
  
  for( i = 0; i < itemLen; i++){
    min = i; 
    for( j = i+1; j < itemLen; j++ ){
      if(items[j] < items[min]){
        min = j
      }
    }
    
    if(min !== i){
      var temp = items[i];
      items[i] = items[min];
      items[min] = temp; 
    }
    
  }
  return items; 
}

items = [31, 14, 20, 28];

document.write(selectionSort(items));