问是否有一种从字符串创建数组的简单方法，该字符串的元素可能比其他元素更长。

EN

const
    s1 = "15+2+16*9-2"
  , s2 = " 15 + 2 + 16 * 9 - 2 "
  , calcN = str => str.split(/(\+|\-|\*|\/)/).map(x=>isNaN(x)?x:Number(x))
  ;
console.log(JSON.stringify(calcN(s1))) // [15,"+",2,"+",16,"*",9,"-",2]
console.log(JSON.stringify(calcN(s2))) // [15,"+",2,"+",16,"*",9,"-",2]

splix = function ()
{
  u = [].slice.call(arguments); v = u.slice(1); u = u[0]; w = [u]; x = 0;

  for (i = 0; i < u.length; ++i)
  {
    for (j = 0; j < v.length; ++j)
    {
      if (u.slice(i, i + v[j].length) == v[j])
      {
        y = w[x].split(v[j]); w[x] = y[0]; w[++x] = y[1];
      };
    };
  };
  
  return w;
};