Javascript，需要var

Question

 helper.js

我通常用Ruby编程。我想得到这个信息：

 var shopInfo =
  {
    "shopName": "The Coffee Connection",
    "address": "123 Lakeside Way",
    "phone": "16503600708",
    "prices": 
      {
        "Cafe Latte": 4.75,
        "Flat White": 4.75,
        "Cappucino": 3.85,
        "Single Espresso": 2.05,
        "Double Espresso": 3.75,
        "Americano": 3.75,
        "Cortado": 4.55,
        "Tea": 3.65,
        "Choc Mudcake": 6.40,
        "Choc Mousse": 8.20,
        "Affogato": 14.80,
        "Tiramisu": 11.40,
        "Blueberry Muffin": 4.05,
        "Chocolate Chip Muffin": 4.05,
        "Muffin Of The Day": 4.55
      }
    }
  }

我想在文件夹中的另一个文件中使用它，因为我希望看起来整洁

  main.js

我试过这个：

  var helper = require('./helper');

我只想让main.js知道shopInfo是什么

Answer 1

假设您正在讨论服务器端node.js程序，您可以将其放在另一个模块文件中，然后通过分配到modules.exports将其导出。

在helper.js中：

 var localShopInfo = {
     "shopName": "The Coffee Connection",
     "address": "123 Lakeside Way",
     "phone": "16503600708",
     "prices": {
         "Cafe Latte": 4.75,
         "Flat White": 4.75,
         "Cappucino": 3.85,
         "Single Espresso": 2.05,
         "Double Espresso": 3.75,
         "Americano": 3.75,
         "Cortado": 4.55,
         "Tea": 3.65,
         "Choc Mudcake": 6.40,
         "Choc Mousse": 8.20,
         "Affogato": 14.80,
         "Tiramisu": 11.40,
         "Blueberry Muffin": 4.05,
         "Chocolate Chip Muffin": 4.05,
         "Muffin Of The Day": 4.55
     }
 };

// assign to module.exports to make it available to other modules
module.exports = localShopInfo;

然后，在main.js中：

var shopInfo = require('./helper');

您现在可以在main.js中随意使用shopInfo。

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require()加载器在其加载的模块中返回module.exports的值。然后，将其分配给当前模块中要调用它的任何变量。

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注意：您的shopInfo声明中还有一个额外的结束括号。