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Correct way to Load JS Files With HTML files through NodeJS

I cant get the contents included in the head of the served defualt.htm page to "work". The html loads in the dom, just the CSS and JS files fail. Is there a better alternative? Id like to keep the solution within NodeJS but alternatively open to socket.io and express as well.

Thanks, below is what im using.

NodeJS Serving the Page

var http = require('http'),
fs = require('fs');

fs.readFile(__dirname+'/default.htm', function (err, html) {
    if (err) {
        throw err; 
    }       
    http.createServer(function(request, response) {  
        response.writeHeader(200, {"Content-Type": "text/html"});  
        response.write(html);  
        response.end();  
    }).listen(port.number);
});

Default.html Page

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="utf-8" />
    <title></title>
    <link rel="stylesheet" href="objects/css/site.css" type="text/css" />
    <script src="objects/js/jquery.min.js" type="text/javascript"></script>
    <script src="objects/js/site.min.js" type="text/javascript"></script>
</head>

<body></body>    

</html>
like image 751
sia Avatar asked Nov 12 '12 06:11

sia


4 Answers

Your Javascript and styles are failing because they don't exist. Your current webserver is only sending a single route, the root route. Instead you'll need to allow the use of multiple routes. ExpressJS does this for you in a simpler way, but still very possible without it.

    var http = require('http');
    var fs   = require('fs');


    var server = http.createServer(function(request, response){
       var header_type = "";
       var data        = "";
       var get = function (uri, callback) {
           // match `request.url` with uri with a regex or something.
           var regex = uri;
           if (request.url.match(regex)) {
               callback();
           }
       };    

       var render = function (resource) {
           // resource = name of resource (i.e. index, site.min, jquery.min)
           fs.readFile( __dirname + "/" + resource, function(err, file) {
              if (err) return false; // Do something with the error....
              header_type = ""; // Do some checking to find out what header type you must send.
              data = file;
           }
       };

       get('/', function(req, res, next) {
           // Send out the index.html
           render('index.html');
           next();
       });


       get('/javascript.min', function(req, res, next) {
          render('javascript.js');
          next();
       });


    });

    server.listen(8080);

This might get you started, but you'll have to implement some things like next() yourself. A pretty simple solution, but a working one.

Another solution for responding to static files would be to create a catcher within the http.createServer callback. Within the get method, if the uris don't match, then you would look within a public folder matching the full uri to the file system structure.

like image 149
Daniel Avatar answered Sep 28 '22 20:09

Daniel


I'm going to throw my two cents in here as well.

The way I solved the same problem with serving static files is that I started using the Paperboy module, which is deprecated in favor of the Send module nowadays.

Anyhoo, the way I solved it was to "hijack" the request before it went into my GET method and check the path of it.

The way I "hijack it" is as follows

self.preProcess(self, request, response);

and

preProcess: function onRequest(app, request, response){ //DO STUFF }

If the path contained the STATICFILES dir, I would do a diffrent serving of files otherwise I'd go with the "html"-path. Below is the //DO STUFF of the preProcess() function

var path = urllib.parse(request.url).pathname;
if(path.indexOf(settings.STATICFILES_DIR) != -1) {
    path = settings.STATICFILES_DIR;
    requestedFile = request.url.substring(request.url.lastIndexOf('/') + 1, request.url.length);
    return resolver.resolveResourceOr404(requestedFile, request, response);
}

There might be a better way of doing this but this works like a charm for the things that I need it to do.

Using the Paperboy module I then, using the resolver.resolveResourceOr404(); function deliver the file like so

resolveResourceOr404 : function (filename, httpRequest, httpResponse) {
    var root = path.join(path.dirname(__filename), '');

    paperboy.deliver(root, httpRequest, httpResponse)
    .error(function(e){
        this.raise500(httpResponse);
    })
    .otherwise(function(){
        this.raise404(httpResponse);
    });
}
like image 41
Henrik Andersson Avatar answered Sep 28 '22 21:09

Henrik Andersson


Well, you are serving your default.htm file on all requests. So, when the browser asks for objects/js/jquery.min.js, your server returns the contents of default.htm.

You should really consider using express or some other framework.

like image 24
surj Avatar answered Sep 28 '22 20:09

surj


what about trying this:

var http = require('http');
var fs = require('fs');
var path = require('path');

http.createServer(function (request, response) {
console.log('request starting...');

var filePath = '.' + request.url;
if (filePath == './')
    filePath = './index.html';

var extname = path.extname(filePath);
var contentType = 'text/html';
switch (extname) {
    case '.js':
        contentType = 'text/javascript';
        break;
    case '.css':
        contentType = 'text/css';
        break;
    case '.json':
        contentType = 'application/json';
        break;
    case '.png':
        contentType = 'image/png';
        break;      
    case '.jpg':
        contentType = 'image/jpg';
        break;
    case '.wav':
        contentType = 'audio/wav';
        break;
}

fs.readFile(filePath, function(error, content) {
    if (error) {
        if(error.code == 'ENOENT'){
            fs.readFile('./404.html', function(error, content) {
                response.writeHead(200, { 'Content-Type': contentType });
                response.end(content, 'utf-8');
            });
        }
        else {
            response.writeHead(500);
            response.end('Sorry, check with the site admin for error: '+error.code+' ..\n');
            response.end(); 
        }
    }
    else {
        response.writeHead(200, { 'Content-Type': contentType });
        response.end(content, 'utf-8');
    }
});

}).listen(8125);
console.log('Server running at http://127.0.0.1:8125/');
like image 45
Hasan A Yousef Avatar answered Sep 28 '22 20:09

Hasan A Yousef