js怎样判断status

function bjsxjia(id,status){
  let zt = status
  if(zt == 1){
    zt = 2
  }else if(zt == 2){
    zt = 1
  }
  sessionStorage.setItem('ztt', zt);
  $.ajax({
    type: "post",
    url: gong + "/spigall/Semeal/speedines",
    headers: {
      token: tokens,
      id: fzx
    },
    data: {
      id: id,
      status: zt
    },
    success: function(result) {
      console.log(result);
      data = result;
      fz()
    },
    error: function(e) {
      console.log(e.status);
      console.log(e.responseText);
    }
  });
}