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JavaScript Express Basics (2015) Doing more with Express Using Logic in Jade Templates

Posted by Anuj Gupta
Anuj Gupta
5,361 Points

There is no effect of the condition I have put in. Why so ?

My _nav.jade :

_nav.jade 
nav#mainNav.navbar.navbar-default.navbar-fixed-top
          .container-fluid
            // Brand and toggle get grouped for better mobile display
            .navbar-header
              button.navbar-toggle.collapsed(type='button', data-toggle='collapse', data-target='#bs-example-navbar-collapse-1')
                span.sr-only Toggle navigation
                |                     
                span.icon-bar
                |                     
                span.icon-bar
                |                     
                span.icon-bar
              |                 
              a.navbar-brand.page-scroll(href='/') FitLog.io
            // Collect the nav links, forms, and other content for toggling
            #bs-example-navbar-collapse-1.collapse.navbar-collapse
              ul.nav.navbar-nav.navbar-right
                li
                    a(href='/blog') Blog
                if path === '/'  
                        |
                        li
                            a.page-scroll(href='#about') About

                        li
                            a.page-scroll(href='#services') Services
                        |                     
                        li
                            a.page-scroll(href='#portfolio') Portfolio
                        |                     
                        li
                            a.page-scroll(href='#contact') Contact
                        // /.navbar-collapse
                        // /.container-fluid

My app.js :

app.js 
'use strict';

//require express package
var express = require("express"),
      posts = require("./mock/posts.json");

//convert object into array
var postLists = Object.keys(posts).map(function(value){
                                    return posts[value]});

//this is a convention
var app = express();
var dir = __dirname + '/templates'; //_dirname gives you the directory of app.js

app.use('/static',express.static(__dirname +'/public'));

//set up JADE template engine
app.set('view engine', 'jade');
app.set('views', dir );

//create a route for HTTP GET request made by the client
app.get('/', function(req, res){
    var path = req.path;
    res.render('index', {path : path});
})

app.get('/blog/:title?', function(req, res){
    var title = req.params.title;
    if(title === undefined){
        res.status(503);
        res.render('blog', {posts: postLists});
    }else{
        var post = posts[title] || {};
        res.render('post', {post: post});
    }

})

//this tells the client to look at port 3000 for the response from server
app.listen(3000, function(){
    console.log("The frontend server is running port 3000");
});

1 Answer

Iain Simmons
MOD
Iain Simmons
Treehouse Moderator 32,305 Points
Iain Simmons
Iain Simmons
Treehouse Moderator 32,305 Points

Just remove that first vertical bar ( | ) from after the if path === '/':

_nav.jade 
              ul.nav.navbar-nav.navbar-right
                li
                    a(href='/blog') Blog
                if path === '/'  
                    li
                        a.page-scroll(href='#about') About