Does anyone know what went wrong in this code. It's not printing anything

function waterPuzz(a,b){

  if(b==0)

    return a ;

  return waterPuzz(b,a%b);

}

function pour(fromJug , toJug,d) {

   let from = fromJug ;

  let to = 0 ;

  let step = 1 ;

  while(from != d && to != d){

    let temp = Math.min(from,toJug-to);

    to += temp;

    from -= temp;

    step++;

    if(from==d || to ==d)

      break;

    

    if(from ==0){

      from == fromJug;

      step++;  

    }

    if(to==toJug){

      to= 0 ;

      step ++;

    }

  }

  return step;

}

function minimumSteps(m,n,d){

  if (m>n){

    let t = m ;

    m = n ;

    n = t ;

  }

  if(d>n)

    return -1;

  if((d%waterPuzz(n,m)!=0))

     return -1;

  return Math.min(pour (n,m,d),

    pour(m,n,d));

}

//Driving the code by taking user inputs

let m = prompt("Enter the value of Jug1(m) : ");

let n = prompt("Enter the value of Jug2(n) : ");

let d = prompt("Enter d : ");

alert("Minimum numbers" + "of Steps required" + minimumSteps(m,n,d));

I tried to make an water p开发者_如何学Gouzzle solver. But it's not showing anything