What you are looking for is a good JavaScript documentation generator.  I found a decent one here http://apidocjs.com/example/.
This will allow you to use just Express as OP asked.  

Swagger isn&#39;t for _generating_ docs, it&#39;s for _making_ APIs.  So you are going to need to learn a full system to get that feature.

I found a couple more here that I haven&#39;t fully looked into yet which seem promising:  
Docco [here][1] JSDoc [here][2] and [an  article on Documentor for Node][3]


  [1]: http://jashkenas.github.io/docco/
  [2]: http://usejsdoc.org/
  [3]: http://samwize.com/2014/01/31/the-best-documentation-generator-for-node/

Swagger is an amazing project for auto generating API documentation. It includes an Express module. 

http://swagger.io/

https://github.com/wordnik/swagger-node-express

I found this library to be very useful when it comes to keeping your documentation and route declaration logic close together:

https://www.npmjs.com/package/swagger-jsdoc

If you use Postman while developing you might already have a Postman collection containing the most relevant calls.
If that is the case Postman has a docs feature https://learning.postman.com/docs/publishing-your-api/documenting-your-api/ 



I&#39;m using Emacs 24; I&#39;ve installed the **zenburn** theme, which is great, except I cannot see the selection highlight easily with the highlight color provided by **zenburn**:

![enter image description here][1]

By **&quot;selection&quot;** color, I mean the color of text that I&#39;ve selected by setting a mark (`C-space` and moving the cursor to select text).

For the life of me, I cannot figure out how to change it. I&#39;ve tried changing every combination of `highlight`, `selection`, etc.. that I can think of in `zenburn-theme.el`, but nothing seems to change it.  

**For sanity&#39;s sake, I&#39;ve tried changing other colors in the theme to make sure Emacs is loading the file properly - it is - those changes work.*

I would have especially thought that changing `highlight` would work, but no customizations to the `highlight` line seem to work:

    ;;;; Built-in                                                                                                                                                                            
    ;;;;; basic coloring                                                 
       ...                                                                                                      
       `(highlight ((t (:background ,zenburn-bg-05 :foreground ,zenburn-yellow))))  

How can I change the selection color?

  [1]: http://i.stack.imgur.com/pZwnZ.png

How do I change the highlight color for selected text with Emacs / deftheme?

Basically, I am doing what the heading states, attempting to save the contents of a div as an image.

I plan on making a small online application for the iPad.

One function that is a must is having a &#39;Save&#39; button that can save the full webpage as an image, and save that image to the iPad&#39;s camera roll. I wish to save the full contents of a div, not just the visible area.

I have searched briefly online, but couldn&#39;t find much documentation on anything. I found a lot on HTML5 Canvas. Here is some code I put together:

    &lt;script&gt;
    function saveimg()
    {
    	var c = document.getElementById(&#39;mycanvas&#39;);
    	var t = c.getContext(&#39;2d&#39;);
    	window.location.href = image;
    	
    	window.open(&#39;&#39;, document.getElementById(&#39;mycanvas&#39;).toDataURL());
    }
    &lt;/script&gt;
    
    &lt;div id=&quot;mycanvas&quot;&gt;
    This is just a test&lt;br /&gt;
    12344&lt;br /&gt;
    &lt;/div&gt;
    
    &lt;button onclick=&quot;saveimg()&quot;&gt;Save&lt;/button&gt;

Although, I am getting this error:

    TypeError: c.getContext is not a function

This application will be built only with HTML, CSS and jQuery (or other Javascript libraries).

How to save the contents of a div as a image?

I&#39;m working on a restAPI using Express.js and I&#39;m wondering if there is a way for me to generate API documents that allow a user to view API definitions or possibly even try out the API call?

Node.js or Express.js REST API document generator

<p>I'm working on a restAPI using Express.js and I'm wondering if there is a way for me to generate API documents that allow a user to view API definitions or possibly even try out the API call?</p>


I found some code where they set up Express without using `app.configure` and I was wondering, what&#39;s the difference between using `app.configure` without an environment specifier and not using it?

In other words, what&#39;s the difference between this:

    var app = require(express);

    app.configure(function(){
        app.set(&#39;port&#39;, process.env.PORT || config.port);
        app.use(express.logger(&#39;dev&#39;));  /* &#39;default&#39;, &#39;short&#39;, &#39;tiny&#39;, &#39;dev&#39; */
        app.use(express.bodyParser());
        app.use(express.static(path.join(__dirname, &#39;site&#39;)));
    }

and this:

    var app = require(express);

    app.set(&#39;port&#39;, process.env.PORT || config.port);
    app.use(express.logger(&#39;dev&#39;));  /* &#39;default&#39;, &#39;short&#39;, &#39;tiny&#39;, &#39;dev&#39; */
    app.use(express.bodyParser());
    app.use(express.static(path.join(__dirname, &#39;site&#39;)));

Thanks.

Using app.configure in express

    XMLHttpRequest cannot load http://localhost:8080/api/test. Origin http://localhost:3000 is not allowed by Access-Control-Allow-Origin. 

I read about cross domain ajax requests, and understand the underlying security issue. In my case, 2 servers are running locally, and like to enable cross domain requests during testing.

    localhost:8080 - Google Appengine dev server
    localhost:3000 - Node.js server

I am issuing an ajax request to `localhost:8080 - GAE server` while my page is loaded from node server. What is the easiest, and safest ( Don&#39;t want to start chrome with `disable-web-security` option). If I have to change ` &#39;Content-Type&#39;`, should I do it at node server? How?

  

Origin &lt;origin&gt; is not allowed by Access-Control-Allow-Origin

In so many introductory examples of using MongoDB, you see code like this:

    var MongoClient = require(&#39;mongodb&#39;).MongoClient;
    MongoClient.connect(&quot;mongodb://localhost:port/adatabase&quot;, function(err, db)
    {
        /* Some operation... CRUD, etc. */
        db.close();
    });

If MongoDB is like any other database system, `open` and `close` operations are typically expensive time-wise. 

So, my question is this: Is it OK to simply do the `MongoClient.connect(&quot;...` once, assign the returned `db` value to some module global, have various functions in the module do various database-related work (insert documents into collections, update documents, etc. etc.) when they&#39;re called by other parts of the application (and thereby re-use that `db` value), and then, when the application is done, only then do the `close`. 

In other words, `open` and `close` are done once - not every time you need to go and do some database-related operation. And you keep re-using that `db` object that was returned during the initial `open\connect`, only to dispose of it at the end, with the `close`, when you&#39;re actually done with all your database-related work. 

Obviously, since all the I/O is asynch, before the `close` you&#39;d make sure that the last database operation completed before issuing the `close`. Seems like this should be OK, but i wanted to double-check just in case I&#39;m missing something as I&#39;m new to MongoDB. Thanks!

Keeping open a MongoDB database connection

The code in node.js is simple enough.

    _.each(users, function(u, index) {
      if (u.superUser === false) {
        //return false would break
        //continue?
      }
      //Some code
    });

My question is how can I continue to next index without executing &quot;Some code&quot; if superUser is set to false?

PS: I know an else condition would solve the problem. Still curious to know the answer.

How to &#39;continue&#39; inside a each loop : underscore, node.js

Currently is seems that for any code change in a sails.js app you have to manually stop the sails server and run `sails lift` again before you can see the changes.

I was wondering if there is any way when running in development mode to automatically restart the sails server when it detects a code change?

Auto reloading a Sails.js app on code changes?

I&#39;m sure I&#39;m missing something really obvious here, but I can&#39;t figure this out. The function I&#39;ve passed to the LocalStrategy constructor doesn&#39;t get called when the login form gets submitted.

Code:

    var express = require(&#39;express&#39;);
    var http = require(&#39;http&#39;);
    var path = require(&#39;path&#39;);
    var swig = require(&#39;swig&#39;);
    var passport = require(&#39;passport&#39;);
    
    var LocalStrategy = require(&#39;passport-local&#39;).Strategy;
    
    passport.serializeUser(function(user, done) {
      console.log(&#39;Serialize user called.&#39;);
      done(null, user.name);
    });
    
    passport.deserializeUser(function(id, done) {
      console.log(&#39;Deserialize user called.&#39;);
      return done(null, {name: &#39;Oliver&#39;});
    });
    
    passport.use(new LocalStrategy(
      function(username, password, done) {
        console.log(&#39;local strategy called with: %s&#39;, username);
        return done(null, {name: username});
      }));
    
    var app = express();
    
    app.set(&#39;port&#39;, process.env.PORT || 3000);
    app.set(&#39;view engine&#39;, &#39;swig&#39;);
    app.set(&#39;views&#39;, __dirname + &#39;/views&#39;);
    app.use(express.favicon());
    app.use(express.logger(&#39;dev&#39;));
    app.use(express.bodyParser());
    app.use(express.methodOverride());
    app.use(express.cookieParser(&#39;asljASDR2084^^!&#39;));
    app.use(express.session());
    app.use(passport.initialize());
    app.use(passport.session());
    app.use(app.router);
    app.use(require(&#39;less-middleware&#39;)({ src: __dirname + &#39;/public&#39; }));
    app.use(express.static(path.join(__dirname, &#39;public&#39;)));
    app.use(express.errorHandler({ dumpExceptions:true, showStack:true }));
    
    app.engine(&#39;swig&#39;, swig.renderFile);
    
    app.post(&#39;/auth&#39;, passport.authenticate(&#39;local&#39;));
    app.get(&#39;/login&#39;, function(req, res) {
      // login is a simple form that posts username and password /auth
      res.render(&#39;login&#39;, {});
    });
    
    http.createServer(app).listen(app.get(&#39;port&#39;), function(){
      console.log(&#39;Express server listening on port &#39; + app.get(&#39;port&#39;));
    });

The form on my /login page is cut and pasted from the passport docs except that I changed it to submit to /auth instead of /login:

    &lt;form action=&quot;/auth&quot; method=&quot;post&quot;&gt;
        &lt;div&gt;
            &lt;label&gt;Username:&lt;/label&gt;
            &lt;input type=&quot;text&quot; name=&quot;username&quot;/&gt;
        &lt;/div&gt;
        &lt;div&gt;
            &lt;label&gt;Password:&lt;/label&gt;
            &lt;input type=&quot;password&quot; name=&quot;password&quot;/&gt;
        &lt;/div&gt;
        &lt;div&gt;
            &lt;input type=&quot;submit&quot; value=&quot;Log In&quot;/&gt;
        &lt;/div&gt;
    &lt;/form&gt;

When I sumit the login form, the following gets logged

    GET /login 200 5ms - 432b
    POST /auth 401 6ms

Note that &quot;local strategy called&quot; is never logged.

Why isn&#39;t the function I passed to LocalStrategy getting called?

passport local strategy not getting called

When I use Express, and my code is:

    app.use(express.bodyParser());

How would I get the **raw request body**?


Node.js - get raw request body using Express

I&#39;ve been reading `passport.js` info and samples for two days, but I&#39;m not sure after that I did all the process of authenticating. 

How do I know if I&#39;m logged in, for example, I&#39;ll have a navigation bar with a login or logout button, is there some variable like code below?

    if (login)
       &lt;button&gt;logout&lt;/button&gt;
    else 
       &lt;button&gt;login&lt;/button&gt;

How to know if user is logged in with passport.js?

When I reload a website made with express, I get a blank page with Safari (not with Chrome) because the NodeJS server sends me a 304 status code.

**How to solve this?**

Of course, this could also be just a problem of Safari, but actually it works on all other websites fine, so it has to be a problem on my NodeJS server, too.

To generate the pages, I&#39;m using Jade with `res.render`.

**Update:** It seems like this problem occurs because Safari sends `&#39;cache-control&#39;: &#39;max-age=0&#39;` on reload.

**Update 2:** I now have a workaround, but is there a better solution?
Workaround:

    app.get(&#39;/:language(&#39; + content.languageSelector + &#39;)/:page&#39;, function (req, res)
    {
    	// Disable caching for content files
    	res.header(&quot;Cache-Control&quot;, &quot;no-cache, no-store, must-revalidate&quot;);
    	res.header(&quot;Pragma&quot;, &quot;no-cache&quot;);
    	res.header(&quot;Expires&quot;, 0);
    
    	// rendering stuff here…
    }

**Update 3:**
So the complete code part is currently:

    app.get(&#39;/:language(&#39; + content.languageSelector + &#39;)/:page&#39;, pageHandle);
    
    function pageHandle (req, res)
    {
    	var language = req.params.language;
    	var thisPage = content.getPage(req.params.page, language);
    
    	if (thisPage)
    	{
    		// Disable caching for content files
    		res.header(&quot;Cache-Control&quot;, &quot;no-cache, no-store, must-revalidate&quot;);
    		res.header(&quot;Pragma&quot;, &quot;no-cache&quot;);
    		res.header(&quot;Expires&quot;, 0);
    	
    		res.render(thisPage.file + &#39;_&#39; + language, {
    			thisPage : thisPage,
    			language: language,
    			languages: content.languages,
    			navigation: content.navigation,
    			footerNavigation: content.footerNavigation,
    			currentYear: new Date().getFullYear()
    		});
    	}
    	else
    	{
    		error404Handling(req, res);
    	}
    }

Content Type	Original Author	Original Content on Stackoverflow
Question	Nam Nguyen	View Question on Stackoverflow
Solution 1 - node.js	blamb	View Answer on Stackoverflow
Solution 2 - node.js	Dan Kohn	View Answer on Stackoverflow
Solution 3 - node.js	Marcos Pereira	View Answer on Stackoverflow
Solution 4 - node.js	Schaki	View Answer on Stackoverflow

Node.js or Express.js REST API document generator

node.js Problem Overview

node.js Solutions

Solution 1 - node.js

Solution 2 - node.js

Solution 3 - node.js

Solution 4 - node.js

How to save the contents of a div as a image?

How do I change the highlight color for selected text with Emacs / deftheme?

Attributions