Uncaught SyntaxError: Illegal return statement in recursive function

Question

I'm getting an illegal return statement in the line of my code near the bottom that says: return points

createPoints(x, y, length, depth, angle, points)
{
  if(depth > 0)
  {
    //draws line
    points.push((x + length) * Math.sin(angle));
    points.push((y + length) * Math.cos(angle));

    //draw left branch
    angle += Math.PI / 4;
    createPoints(treeString, (x + length/2) * Math.sin(angle), (y + length/2) * Math.cos(angle), depth - 1, points);

    //goes back
    points.push(x);
    points.push(y);

    //draw right branch
    angle -= Math.PI / 2;
    createPoints(treeString, (x + length/2) * Math.sin(angle), (y + length/2) * Math.cos(angle), depth - 1, points);
    return points;
  }
  return;
}

the function is supposed to plot points in an array for a fractal tree to use in webgl. I'm not sure why I'm getting my error and unfortunately, neither my professor nor TA know either.

Since you can only use return within a Function, you must declare createPoints as such, i.e function createPoints(x, y, length, depth, angle, points) { // function body ... } . Check the MDN link about functions and to see alternative ways to declare one. — nicholaswmin
– nicholaswmin, Commented Oct 11, 2019 at 20:00
Can you show the full error (a screenshot, if necessary) and more context for the code? — Ry-
– Ry- ♦, Commented Oct 11, 2019 at 20:00
Oh, is this code just at the top level? You’re trying to use a shorthand that only works in classes and object literals. There needs to be some kind of declaration involved, like @NikKyriakides said. — Ry-
– Ry- ♦, Commented Oct 11, 2019 at 20:01

Rakesh · Accepted Answer · 2019-10-11 20:25:13Z

1

you are missing function keyword for your function name
try below pattern, it will help you .

 function createPoints () {} 

let createPoints = () => {}

answered Oct 11, 2019 at 20:25

Rakesh

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