JSON在视图中收到但无法在jade的select选项中呈现它

Question

我在jade中有以下视图，它显示了json城市，但是当环入以获取cityName时它是空的

  p #{cities}
  p
    label(for='from') From
    select#sourcecity(name="sourcecity", required="required")
      each sourceCity in cities
        option(value="#{sourceCity.cityId}") #{sourceCity.cityName}

p＃{cities}

[{"cityId":79,"cityName":"Lenggong"},{"cityId":64,"cityName":"Gemas"},{"cityId":87,"cityName":"Jerteh"},{"cityId":36,"cityName":"LCCT"},{"cityId":95,"cityName":"Genting Highlands"},{"cityId":57,"cityName":"Pengkalan Kubor"},{"cityId":2,"cityName":"Kuala Lumpur"},{"cityId":3,"cityName":"Melaka"},{"cityId":15,"cityName":"Seremban"},{"cityId":28,"cityName":"Kangar"},{"cityId":63,"cityName":"Bahau"}]

Answer 1

由于您似乎建议p #{cities}将看起来作为对象呈现，我认为您将JSON 字符串传递给Jade。< / p>

这样的事情：

res.render('page', {
  cities : '[{"cityId":79,"cityName":"Lenggong"},...]'
});

但是Jade需要传递一个实际的对象：

res.render('page', {
  cities : JSON.parse('[{"cityId":79,"cityName":"Lenggong"},...]')
});