JS Bin// source https://jsbin.com/hosocabisi

bubble-sort.js

let testArray = [10, 25, 25, 12, 22, 11, 90];

console.log(sort(testArray));

function sort(array){
  
  let length = array.length;
  
  for(let i = 0; i < length; i++ ){
   
    let j = 0;
    
    while(j < length - i - 1 ){
      
      if(array[j] > array[j + 1]){
        
        let temp = array[j];
        array[j] = array[j + 1];
        array[j + 1] = temp;
      }
      
      j++;
    
    }
  
  }
  
  return array;
  
}