how to round number down in javascript code example

Example 1: javascript round down

Math.floor(x);

Example 2: javascript round .5 down

//standard round function, except round .5 down instead of up
function roundHalfDown(num) {
  return -Math.round(-num);
}
roundHalfDown(1.5);// 1
roundHalfDown(1.6);// 2