在节点。如何从一个单独的.js文件返回整个对象?

I am new to Node.js and trying to figure out how to request an object from a separate file (rather than just requesting a function) but everything I try--exports,module-exports,etc--is failing.

我是Node的新手。尝试从一个单独的文件中请求一个对象(而不是仅仅请求一个函数)，但是我尝试的所有东西——导出、模块导出等等——都失败了。

So, for example, if I have foo.js:

例如，如果我有foo。js:

    var methods = {
                   Foobar:{
                            getFoo: function(){return "foo!!";},
                            getBar: function(){return "bar!!";}
                   }
                  };
module.exports = methods;

And now I want to call a function within an object of foo.js from index.js:

现在我想调用foo对象中的函数。从index.js js:

var m = require('./foo');  
function fooMain(){
  return m.Foobar.getFoo();
};

How do I do this? I have tried all sorts of combinations of exports and module-exports but they seem to only work if I call a discrete function that is not part of an object.

我该怎么做呢?我尝试过各种出口和模块出口的组合，但它们似乎只有在我调用一个不属于某个对象的离散函数时才有效。

1 个解决方案

#1

You said that you tried exports, but your code doesn't show it. Anything that you want to be visible from outside your module must be assigned to (or otherwise be referable from) module.exports. In your case, where you have an object already, you can just assign it to module.exports:

您说您尝试了导出，但是您的代码没有显示它。任何您希望在模块之外可见的内容都必须被分配到(或其他可引用的)modu .exports。在你的例子中，如果你已经有了一个对象，你可以把它分配给modu。export:

var methods = {
    ...
};

// You must export the methods explicitly
module.exports = methods;

module.exports isn't magic, it's a normal object, and you can treat it as such. Meaning that you could have assigned your methods directly to it, as in:

模块。出口不是魔术，它是一个普通的物体，你可以把它当作魔术。意思是你可以直接把你的方法分配给它，比如:

module.exports.Foobar = {};
module.exports.Foobar.getFoo = function() { ... };
...

Or, as you probably know, you could event replace it with a function:

或者，你可能知道，你可以用一个函数替换它:

module.exports = function() { return "It's ALWAYS over 9000!!!!"; };

Only after exporting will you be able to use anything in another module.

只有导出之后，您才能在其他模块中使用任何内容。

#1

var methods = {
    ...
};

// You must export the methods explicitly
module.exports = methods;