js采用concat和sort将N个数组拼接起来的方法

<script type="text/javascript" >
    function concatAndSortArray(array1, array2) {
      if (arguments.length < 2) {
        return;
      }
      var arg = null;
      var array = [];
      for (var i = 0; i < arguments.length; i++) {
        arg = arguments[i];
        if (typeof arg === "object" && arg.length > 0) {
          array = array.concat(arg);
        }
      }
      array.sort(function (arg1, arg2) {
        if (arg1 > arg2) {
          return 1;
        } else {
          return -1;
        }
      });
      return array;
    }
    var array1 = [1, 2, 3, 4, 5, 15];
    var array2 = [10, 12, 13, 25, 35];
    var array = concatAndSortArray(array1, array2);
    console.log(array);
  </script>