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JavaScript Build a Simple Dynamic Site with Node.js HTTP Methods and Headers Perfection Suggestions

Posted by Susan Rusie
Susan Rusie
10,671 Points

Why is this saying there is a syntax error?

I am trying to figure out what could be wrong with my code. I assume that the idea for the extra credit is for the text for the css to print to the console when I run Node but it is saying there is an syntax error with this for the following code because it won't run Node:

function user(request, response){

Here is my code for the router.js:

var Profile = require("./profile.js");
var renderer = require("./renderer.js");
var querystring = require("querystring");
var fs = require('fs');

var commonHeaders = {'Content-Type': 'text/html'};
var commonHeaders = {'Content-Type': 'text/css'};

//function that reads css
function css(request, response) {
  //if url == "/" && GET
  if(request.url.indexOf === (".css") !== -1){
      var file = fs.readFileSync(`.${request.url}`, {'encoding' : 'utf8'});
      response.writeHead(200, {'Content-Type' : 'text/css'});
      response.write(file);
      request.end();
  }
}
    if(request.method.toLowerCase() === "get") {
      //show search
      response.writeHead(200, cssHeaders);
      renderer.css(response);
      response.writeHead(200, commonHeaders);
      renderer.view("header", {}, response);
      renderer.view("search", {}, response);
      renderer.view("footer", {}, response);
      response.end();
    } else {
      //if url == "/" && POST
      //redirect to /: username

      //get the post data from body
      request.on("data", function(postBody) {
        //extract the username
        var query = querystring.parse(postBody.toString());
        //redirect to username/:
        response.writeHead(303, {"Location": "/" + query.username});
        response.end();
        });
      } 
    }


//Handle HTTP route GET /:username i.e. /chalkers
function user(request, response){
  //if url == "/...."
  var username = request.url.replace("/", "");
  if(username.length > 0 && request.url.indexOf('.css') === -1){
    response.writeHead(200, {'Content-Type', : 'text/css'});  
    response.write(username);
    response.end();
  }
}

    //get json from Treehouse
    var studentProfile = new Profile(username);
    //on "end"
    studentProfile.on("end", function(profileJSON){
      //show profile

      //Store the values which we need
      var values = {
        avatarUrl: profileJSON.gravatar_url, 
        username: profileJSON.profile_name,
        badges: profileJSON.badges.length,
        javascriptPoints: profileJSON.points.JavaScript
      }
      //Simple response
      renderer.view("profile", values, response);
      renderer.view("footer", {}, response);
      response.end();
    });

    //on "error"
    studentProfile.on("error", function(error){
      //show error
      renderer.view("error", {errorMessage: error.message}, response);
      renderer.view("search", {}, response);
      renderer.view("footer", {}, response);
      response.end();
    });

  }
}

module.exports.home = home;
module.exports.user = user;

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>Treehouse Profile</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style type="text/css" media="screen">
    <!-- link contains actual path to css -->
<link rel="stylesheet" type="text/css" href="./styles/main.css" media="screen">
</head>

Here is my error.html (in the designs folder):

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>Treehouse Profile</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style type="text/css" media="screen">
        @import url(http://fonts.googleapis.com/css?family=Varela+Round);
        @import url(http://necolas.github.io/normalize.css/3.0.2/normalize.css);

        body {
            background: #ECEEEF;
            text-align: center;
            margin: 100px auto;
            max-width: 462px;
            padding: 0 40px;
            font: 18px normal 'Varela Round', Helvetica, serif;
            color: #777B7E;
        }

        img {
            width: 100%;
        }

        #searchIcon, #avatar {
            width: 50%;
            border-radius: 50%;
            margin: 0 25% 0 25%;
        }

        input {
            font-family: 'Varela Round', Helvetica, serif;
            font-size: 18px;
            padding: 31px 0;
            margin: 10px 0;
            text-align: center;
            width: 360px;
            border-radius: 4px;
            border: 1px solid #D5DDE4;
            color: #2C3238;
        }

        #username {
            margin: 20px 0 0;
        }

        .button {
            border-color: #5FB6E1;
            background: #5FB6E1;
            color: #fff;
        }

        #error {
            width: 100%;
            padding: 22px 0;
            background: #FFE6B2;
            color: #C5A14E;
            position: absolute;
            left: 0;
            top: 0;
        }

        #profile {
            background: #fff;
            border-radius: 4px;
            border: 1px solid #D5DDE4;
            padding: 40px 0 0;
            margin: -40px 0 0;
        }

        ul {
            list-style-type: none;
            padding: 0;
            margin: 40px 0 0;
        }

        li {
            display: inline-block;
            width: 100%;
            padding: 22px 0;
            margin: 0;
            border-top: 1px solid #D5DDE4;
        }

        a, a:visited {
            color: #5FB6E1;
            text-decoration: none;
        }

        span {
            color: #2C3238;
        }
    </style>
</head>
<body><div id="error">There was an error getting the profile for new. (Not Found)</div><img src="http://i.imgur.com/VKKm0pn.png" alt="Magnifying Glass" id="searchIcon">

<form action="/" method="POST">
    <input type="text" placeholder="Enter a Treehouse username" id="username" name="username">
    <input type="submit" value="submit" class="button">
</form></body>
</html>

Here is my profile.html (in the designs folder):

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>Treehouse Profile</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style type="text/css" media="screen">
        @import url(http://fonts.googleapis.com/css?family=Varela+Round);
        @import url(http://necolas.github.io/normalize.css/3.0.2/normalize.css);

        body {
            background: #ECEEEF;
            text-align: center;
            margin: 100px auto;
            max-width: 462px;
            padding: 0 40px;
            font: 18px normal 'Varela Round', Helvetica, serif;
            color: #777B7E;
        }

        img {
            width: 100%;
        }

        #searchIcon, #avatar {
            width: 50%;
            border-radius: 50%;
            margin: 0 25% 0 25%;
        }

        input {
            font-family: 'Varela Round', Helvetica, serif;
            font-size: 18px;
            padding: 31px 0;
            margin: 10px 0;
            text-align: center;
            width: 360px;
            border-radius: 4px;
            border: 1px solid #D5DDE4;
            color: #2C3238;
        }

        #username {
            margin: 20px 0 0;
        }

        .button {
            border-color: #5FB6E1;
            background: #5FB6E1;
            color: #fff;
        }

        #error {
            width: 100%;
            padding: 22px 0;
            background: #FFE6B2;
            color: #C5A14E;
            position: absolute;
            left: 0;
            top: 0;
        }

        #profile {
            background: #fff;
            border-radius: 4px;
            border: 1px solid #D5DDE4;
            padding: 40px 0 0;
            margin: -40px 0 0;
        }

        ul {
            list-style-type: none;
            padding: 0;
            margin: 40px 0 0;
        }

        li {
            display: inline-block;
            width: 100%;
            padding: 22px 0;
            margin: 0;
            border-top: 1px solid #D5DDE4;
        }

        a, a:visited {
            color: #5FB6E1;
            text-decoration: none;
        }

        span {
            color: #2C3238;
        }
    </style>
</head>
<body><div id="profile">

    <img src="http://i.imgur.com/KMi72wU.png" alt="Avatar" id="avatar">

    <p><span>@waldo</span></p>

    <ul>
        <li><span>154</span> Badges earned</li>
        <li><span>652</span> JavaScript points</li>
        <li><a href="/">search again</a></li>
    </ul>

</div></body>
</html>

Here is my error.html(in the views folder):

<div id="error">{{errorMessage}}</div>

Here is my footer.html(in the views folder):

</body>
</html>

Here is my header.html (in the views folder):

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <title>Treehouse Profile</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style type="text/css" media="screen
     <link rel="stylesheet" href="styles.css"/>

        @import url(http://fonts.googleapis.com/css?family=Varela+Round);
        @import url(http://necolas.github.io/normalize.css/3.0.2/normalize.css);

        body {
            background: #ECEEEF;
            text-align: center;
            margin: 100px auto;
            max-width: 462px;
            padding: 0 40px;
            font: 18px normal 'Varela Round', Helvetica, serif;
            color: #777B7E;
        }

        img {
            width: 100%;
        }

        #searchIcon, #avatar {
            width: 50%;
            border-radius: 50%;
            margin: 0 25% 0 25%;
        }

        input {
            font-family: 'Varela Round', Helvetica, serif;
            font-size: 18px;
            padding: 31px 0;
            margin: 10px 0;
            text-align: center;
            width: 360px;
            border-radius: 4px;
            border: 1px solid #D5DDE4;
            color: #2C3238;
        }

        #username {
            margin: 20px 0 0;
        }

        .button {
            border-color: #5FB6E1;
            background: #5FB6E1;
            color: #fff;
        }

        #error {
            width: 100%;
            padding: 22px 0;
            background: #FFE6B2;
            color: #C5A14E;
            position: absolute;
            left: 0;
            top: 0;
        }

        #profile {
            background: #fff;
            border-radius: 4px;
            border: 1px solid #D5DDE4;
            padding: 40px 0 0;
            margin: -40px 0 0;
        }

        ul {
            list-style-type: none;
            padding: 0;
            margin: 40px 0 0;
        }

        li {
            display: inline-block;
            width: 100%;
            padding: 22px 0;
            margin: 0;
            border-top: 1px solid #D5DDE4;
        }

        a, a:visited {
            color: #5FB6E1;
            text-decoration: none;
        }

        span {
            color: #2C3238;
        }
    </style>
</head>
<body>

Here is my profile.html (in the views folder):

<div id="profile">

    <img src="{{avatarUrl}}" alt="Avatar" id="avatar">

    <p><span>@{{username}}</span></p>

    <ul>
        <li><span>{{badges}}</span> Badges earned</li>
        <li><span>{{javascriptPoints}}</span> JavaScript points</li>
        <li><a href="/">search again</a></li>
    </ul>

</div>

Here is my search.html (in the views folder):

<img src="http://i.imgur.com/VKKm0pn.png" alt="Magnifying Glass" id="searchIcon">

<form action="/" method="POST">
    <input type="text" placeholder="Enter a Treehouse username" id="username" name="username">
    <input type="submit" value="search" class="button">
</form>

Here is my app.js:

var router = require("./router.js");
//Problem: We need a simple way to look at a user's badge count and JavaScript point from a web browser
//Solution: Use Node.js to perform the profile look ups and server our template via HTTP

//Create a web server
var http = require('http');
 http.createServer(function (request, response) {
 if(request.url === "/") {
    router.routeHome(request, response);
  } else if(request.url.indexOf('.css') != -1) {
    router.routeCss(request, response);
    } else if(request.url.indexOf('.js') != -1) {
      router.routeJs(request, response);
    } else if(request.url.indexOf('.ico') != -1) {
      //there is no favicon.ico at this time, do nothing
      } else {
      router.routeUser(request, response);
        }
}).listen(3000);
console.log('Server running on port: ' + (process.env.PORT !== undefined ? process.env.PORT : 1337));

Here is my example_profile.js:

var Profile = require("./profile.js");


var studentProfile = new Profile("chalkers");

/**
* When the JSON body is fully recieved the 
* the "end" event is triggered and the full body
* is given to the handler or callback
**/
studentProfile.on("end", console.dir);

/**
* If a parsing, network or HTTP error occurs an
* error object is passed in to the handler or callback
**/
studentProfile.on("error", console.error);

Here is my profile.js:

var EventEmitter = require("events").EventEmitter;
var https = require("https");
var util = require("util");

/**
 * An EventEmitter to get a Treehouse students profile.
 * @param username
 * @constructor
 */
function Profile(username) {

    EventEmitter.call(this);

    profileEmitter = this;

    //Connect to the API URL (https://teamtreehouse.com/username.json)
    var request = https.get("https://teamtreehouse.com/" + username + ".json", function(response) {
        var body = "";

        if (response.statusCode !== 200) {
            request.abort();
            //Status Code Error
            profileEmitter.emit("error", new Error("There was an error getting the profile for " + username + ". [" + response.statusCode + response.statusMessage + "]"));
        }

        //Read the data
        response.on('data', function (chunk) {
            body += chunk;
            profileEmitter.emit("data", chunk);
        });

        response.on('end', function () {
            if(response.statusCode === 200) {
                try {
                    //Parse the data
                    var profile = JSON.parse(body);
                    profileEmitter.emit("end", profile);
                } catch (error) {
                    profileEmitter.emit("error", error);
                }
            }
        }).on("error", function(error){
            profileEmitter.emit("error", error);
        });
    });
}

util.inherits( Profile, EventEmitter );

module.exports = Profile;

Here is my renderer.js:

Here is var fs = require("fs");

function mergeValues(values, content) {
  //Cycle over the keys
  for(var key in values) {
    //Replace all {{key}} with the value from the values object
    content = content.replace("{{" + key + "}}", values[key]);
  }
  //return merged content
  return content;
}

function css(response) {
var cssFile = fs.readFileSyn("./views/styles.css" + templateName + 'html', [encoding: "utf8"});
response.write(cssFile);
}
function view(templateName, values, reponse) {
  //Read from the template file
  var fileContents = fs.readFileSync('./views/' + templateName + '.html', {encoding: "utf8"});
  //Insert values in to the content
  fileContents = mergeValues(values, fileContents);
  //Write out the contents to the response
  reponse.write(fileContents);
}

module.exports.view = view;

Any help on this would be greatly appreciated.

rydavim
rydavim
18,813 Points
rydavim
rydavim
18,813 Points

I've been trying to work out what might be going wrong, but without all of your files it's proving difficult. Could you please post all of your code, or setup a workspace snapshot?

When I use your css code section with my own, I do not get any errors. Of course, the code is also not doing anything, because I don't have the rest of your files so I'm not sure how you're calling it elsewhere.

Hopefully we can get this working for you. :)

Susan Rusie
Susan Rusie
10,671 Points

I am not really sure how to take a snapshot of all of my code since I am using Notepad++ instead of Workspaces. Do I need to create a zip file? If so, how do I do that? I am still pretty new to programming so any help you can offer will be greatly appreciated.

rydavim
rydavim
18,813 Points
rydavim
rydavim
18,813 Points

In workspaces, you can do file > upload file or drag and drop files in the left section to upload your work into workspaces.

You're also welcome to edit your original post, or post additional code blocks in the comments.