数组.split()方法在Heroku应用程序中无法正常工作

var str = "Hello,World";
var arr = str.match(/[^,]+/g);
console.log(arr); // 输出：["Hello", "World"]

var str = "Hello,World";
var separator = ",";
var index = str.indexOf(separator);
var arr = [str.substring(0, index), str.substring(index + 1)];
console.log(arr); // 输出：["Hello", "World"]

function splitString(str, separator) {
  var result = [];
  var start = 0;
  for (var i = 0; i < str.length; i++) {
    if (str[i] === separator) {
      result.push(str.substring(start, i));
      start = i + 1;
    }
  }
  result.push(str.substring(start));
  return result;
}

var str = "Hello,World";
var separator = ",";
var arr = splitString(str, separator);
console.log(arr); // 输出：["Hello", "World"]