Truncate number to two decimal places without rounding

Question

Suppose I have a value of 15.7784514, I want to display it 15.77 with no rounding.

var num = parseFloat(15.7784514);
document.write(num.toFixed(1)+\"


        

Answer 1

Here is what is did it with string

export function withoutRange(number) {
  const str = String(number);
  const dotPosition = str.indexOf('.');
  if (dotPosition > 0) {
    const length = str.substring().length;
    const end = length > 3 ? 3 : length;
    return str.substring(0, dotPosition + end);
  }
  return str;
}