Can't Pass all of the test in Golf Code Challenge

Tell us what’s happening:
Can anyone tell me what’s wrong in it, because I can’t pass all the tests and I think I have written the code correctly?

Your code so far


var names = ["Hole-in-one!", "Eagle", "Birdie", "Par", "Bogey", "Double Bogey", "Go Home!"];
function golfScore(par, strokes) {
  // Only change code below this line  
  if (strokes == 1){
    return names[0];
  }
  else if (strokes <= par-2){
    return names[1];
  }
  else if (strokes == par-1){
    return names[2];
  }
  else if (strokes == par){
    return names[3];
  }
  else if (strokes = par+1){
    return names[4];
  }
  else if (strokes == par+2){
    return names[5];
  }
  else if (strokes >= par+3){
    return names[6];
  }
  return "Change Me";
  // Only change code above this line
}
// Change these values to test
golfScore(4, 6);

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User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.170 Safari/537.36 OPR/53.0.2907.99.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/golf-code

Look very carefully at your else if condition. You are assigning a value to strokes instead of making a comparison to strokes.