Break 2 Looping

const dataArr = [[1,2],[5,6],[1,9],[5,6],[7,8]]

// ---- Checking Duplicate Varian ----
  const checkDuplicateVarian = (data) => {
    let dataForCheck = [];
    let isDuplicate = false;
    for (let x = 0; x < data.length; x += 1) {
      dataForCheck = data[x];
      for (let y = x + 1; y < data.length; y += 1) {
          console.log(`Looping Awak ke-`, x);
        if (dataForCheck.toString() === data[y].toString()){
            isDuplicate = true;
            break;
        }  
        
      }
      if(isDuplicate) break;
    }
    
     return isDuplicate;
  };
  
  console.log(checkDuplicateVarian(dataArr));