Math.floor () to round down to nearest 0.5 in javascript [duplicate]

Answer 1

Here's your function:

function slipFloor(num){
  let f = Math.floor(num);
  if(num-f < 0.5){
    return f;
  }
  return f+0.5;
}
console.log(slipFloor(10.55));
console.log(slipFloor(10.99));
console.log(slipFloor(10.2));