如何使用am/pm解析简单时间

function parseTime(timeString) {
  var timeParts = timeString.split(" ");
  var time = timeParts[0];
  var ampm = timeParts[1];

  var timeComponents = time.split(":");
  var hours = parseInt(timeComponents[0]);
  var minutes = parseInt(timeComponents[1]);
  var seconds = parseInt(timeComponents[2]);

  if (ampm.toLowerCase() === "pm") {
    hours += 12;
  }

  return {
    hours: hours,
    minutes: minutes,
    seconds: seconds
  };
}

var timeString = "9:30:45 pm";
var parsedTime = parseTime(timeString);
console.log(parsedTime);