blocks|key|1059881|text|只需做一个require('./yourfile.js');|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1059882|将您希望外部访问的所有变量声明为全局变量。因此，不是|1059883|var+a+=+"hello"它将会是|1059884|GLOBAL.a="hello"或只是|1059885|a+=+"hello"|1059886|这显然很糟糕。您不希望污染全局范围。相反，建议的方法是export你的函数/变量。|1059887|如果您想要MVC模式，可以看看Geddy。|1059888|entityMap^0|5|P|0|0|0|F|0|0|G|0|0|B|0|R|6|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|N|3|O|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|6|7|19|8|@]|D|@]|E|$]]|$1|R|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|S|$]]

Just do a <code>require('./yourfile.js');</code>

Declare all the variables that you want outside access as global variables.
So instead of

<code>var a = "hello"</code> it will be

<code>GLOBAL.a="hello"</code> or just

<code>a = "hello"</code>

This is obviously bad. You don't want to be polluting the global scope.
Instead the suggest method is to <code>export</code> your functions/variables.

If you want the MVC pattern take a look at Geddy.

blocks|key|1059941|text|您需要了解CommonJS，它是一种定义模块的模式。你不应该滥用全局作用域，这总是不好的事情，相反，你可以使用'exports‘标记，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1059942|//+circle.js

var+PI+=+3.14;+//+PI+will+not+be+accessible+from+outside+this+module

exports.area+=+function+(r)+{
++return+PI+*+r+*+r;
};

exports.circumference+=+function+(r)+{
++return+2+*+PI+*+r;
};|code-block|syntax|javascript|1059943|以及将使用我们的模块的客户端代码：|1059944|//+client.js

var+circle+=+require('./circle');
console.log(+'The+area+of+a+circle+of+radius+4+is+'
+++++++++++%2B+circle.area(4));|1059945|以下代码摘自node.js文档API：|1059946|http://nodejs.org/docs/v0.3.2/api/modules.html|offset|length|1059947|此外，如果你想使用Rails或Sinatra之类的东西，我推荐使用Express+(我无法发布URL，真可惜Stack+Overflow!)|1059948|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|1A|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|11|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|13|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|14|8|@]|9|@$O|15|P|16|1|17]]|A|$]]|$1|Q|3|R|5|6|7|18|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|N]]]]

You need to understand CommonJS, which is a pattern to define modules. You shouldn't abuse GLOBAL scope that's always a bad thing to do, instead you can use the 'exports' token, like this:

<pre><code>// circle.js

var PI = 3.14; // PI will not be accessible from outside this module

exports.area = function (r) {
 return PI * r * r;
};

exports.circumference = function (r) {
 return 2 * PI * r;
};
</code></pre>

And the client code that will use our module:

<pre><code>// client.js

var circle = require('./circle');
console.log( 'The area of a circle of radius 4 is '
 + circle.area(4));
</code></pre>

This code was extracted from node.js documentation API:

<a href="http://nodejs.org/docs/v0.3.2/api/modules.html" rel="noreferrer">http://nodejs.org/docs/v0.3.2/api/modules.html</a>

Also, if you want to use something like Rails or Sinatra, I recommend Express (I couldn't post the URL, shame on Stack Overflow!)

blocks|key|845535|text|如果您正在为Node编写代码，那么按照Ivan描述的方式使用Node模块无疑是可行的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|845536|但是，如果您需要加载已经编写的JavaScript，并且不知道节点，则可以使用vm模块(而且肯定比eval更可取)。|offset|length|style|CODE|845537|例如，下面是我的execfile模块，它在context或全局上下文中评估path上的脚本：|845538|var+vm+=+require("vm");
var+fs+=+require("fs");
module.exports+=+function(path,+context)+{
++var+data+=+fs.readFileSync(path);
++vm.runInNewContext(data,+context,+path);
}|code-block|syntax|javascript|845539|还要注意:使用require(…)加载的模块不能访问全局上下文。|845540|entityMap|0|LINK|mutability|MUTABLE|url|http://nodejs.org/docs/v0.4.2/api/vm.html^0|0|13|2|1D|4|13|2|0|0|8|8|L|7|11|4|0|0|7|A|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@$D|10|E|11|F|G]|$D|12|E|13|F|G]]|9|@$D|14|E|15|1|16]]|A|$]]|$1|H|3|I|5|6|7|17|8|@$D|18|E|19|F|G]|$D|1A|E|1B|F|G]|$D|1C|E|1D|F|G]]|9|@]|A|$]]|$1|J|3|K|5|L|7|1E|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|1F|8|@$D|1G|E|1H|F|G]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

If you are writing code for Node, using Node modules as described by Ivan is without a doubt the way to go.

However, if you need to load JavaScript that has already been written and isn't aware of node, the <a href="http://nodejs.org/docs/v0.4.2/api/vm.html" rel="noreferrer"><code>vm</code></a> module is the way to go (and definitely preferable to <code>eval</code>).

For example, here is my <code>execfile</code> module, which evaluates the script at <code>path</code> in either <code>context</code> or the global context:

<pre><code>var vm = require("vm");
var fs = require("fs");
module.exports = function(path, context) {
 var data = fs.readFileSync(path);
 vm.runInNewContext(data, context, path);
}
</code></pre>

Also note: modules loaded with <code>require(…)</code> don't have access to the global context.

blocks|key|845569|text|如果您计划加载外部javascript文件的函数或对象，请使用以下代码在此上下文中加载-请注意runInThisContext方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|845570|var+vm+=+require("vm");
var+fs+=+require("fs");

var+data+=+fs.readFileSync('./externalfile.js');
const+script+=+new+vm.Script(data);
script.runInThisContext();

//+here+you+can+use+externalfile's+functions+or+objects+as+if+they+were+instantiated+here.+They+have+been+added+to+this+context.+|code-block|syntax|javascript|845571|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you are planning to load an external javascript file's functions or objects, load on this context using the following code – note the runInThisContext method: 

<pre><code>var vm = require("vm");
var fs = require("fs");

var data = fs.readFileSync('./externalfile.js');
const script = new vm.Script(data);
script.runInThisContext();

// here you can use externalfile's functions or objects as if they were instantiated here. They have been added to this context. 
</code></pre>

blocks|key|1060091|text|很抱歉复活了。您可以在node.js中使用child_process模块来执行外部js文件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1060092|var+child_process+=+require('child_process');

//EXECUTE+yourExternalJsFile.js
child_process.exec('node+yourExternalJsFile.js',+(error,+stdout,+stderr)+=>+{
++++console.log(`${stdout}`);
++++console.log(`${stderr}`);
++++if+(error+!==+null)+{
++++++++console.log(`exec+error:+${error}`);
++++}
});|code-block|syntax|javascript|1060093|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Sorry for resurrection. You could use child_process module to execute external js files in node.js

<pre><code>var child_process = require('child_process');

//EXECUTE yourExternalJsFile.js
child_process.exec('node yourExternalJsFile.js', (error, stdout, stderr) =&gt; {
 console.log(`${stdout}`);
 console.log(`${stderr}`);
 if (error !== null) {
 console.log(`exec error: ${error}`);
 }
});
</code></pre>

Is it easy/possible to do a simple <code>include('./path/to/file')</code> type of command in node.js? 

All I want to do is have access to local variables and run a script. How do people typically organize node.js projects that are bigger than a simple hello world? (A fully functional dynamic website)

For example I'd like to have directories like:

<code>/models</code>

<code>/views</code>

... etc

Load and execute external js file in node.js with access to local variables?

在node.js中执行简单的include('./path/to/file')类型的命令容易吗？我所要做的就是访问本地变量并运行脚本。人们通常如何组织比简单的hello world更大的node.js项目？(一个全功能的动态网站)例如，我希望有这样的目录：/models/views..。等

问在可以访问本地变量的node.js中加载和执行外部js文件？
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问在可以访问本地变量的node.js中加载和执行外部js文件？
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