Andrea Grandi

Getting started with TinyGo and WebAssembly (WASM)

Posted on Fri 23 October 2020 in Development • Tagged with go, golang, tinygo, web, webassembly, wasm, assembly, js, javascript, html, browser, macos, code, development, embedded, programming, language

This tutorial explains how to call a method written in Go and compiled to WebAssembly (WASM) from JavaScript by using TinyGo

Using Twitter Bootstrap with Node.js, Express and Jade

Posted on Sun 24 February 2013 in HowTo • Tagged with Bootstrap, css, Express, Jade, Javascript, NodeJs, npm, twitter, Ubuntu

I've decided to write this post as a note to myself. I'm still learning Node.js and digging into Express/Jade, but I've read many people using the nice Twitter Bootstrap and I was wondering if there was a way to integrate all these technologies. The short answer is: yes, we can!

Note: once again, I'm not a Node.js expert and surely there are other ways to achieve this task (for example there is a Node.js module called twitter-bootstrap, but I haven't tried it). This tutorial is based on another tutorial I found, but it was not very updated and it had a more complicated way to install Bootstrap, so I decided to write a new one basing it on the original http://www.rs.au.com/31/how-to-install-bootstrap-v2-0-2-in-expressjs-v3-0-0

Preparing the environment

I will assume that you're running any Linux distribution (in my case I'm using Ubuntu 12.10, but feel free to use your own distribution). Be sure to have installed a recent version of nodejs and npm packages (I'm using Node.js 0.8.20 and npm 1.2.11).

Create a project folder and install the required dependencies

mkdir node-bootstrap
cd node-bootstrap
npm install express
npm install jade

Create the basic project structure with Express

andrea@andrea-Inspiron-660:~/Documents/sviluppo/nodejs/node-bootstrap$ node_modules/express/bin/express nodebootstrap

create : nodebootstrap
create : nodebootstrap/package.json
create : nodebootstrap/app.js
create : nodebootstrap/public
create : nodebootstrap/public/javascripts
create : nodebootstrap/public/images
create : nodebootstrap/public/stylesheets
create : nodebootstrap/public/stylesheets/style.css
create : nodebootstrap/routes
create : nodebootstrap/routes/index.js
create : nodebootstrap/routes/user.js
create : nodebootstrap/views
create : nodebootstrap/views/layout.jade
create : nodebootstrap/views/index.jade

install dependencies:
$ cd nodebootstrap && npm install

run the app:
$ node app

You should already have installed all the needed dependencies, even without executing npm install, anyway executing it won't hurt.

Download and install Bootstrap

Download Twitter Boostrap from the official website http://twitter.github.com/bootstrap/assets/bootstrap.zip and unzip it under the nodebootstrap/public folder.

Bootstrap integration with Jade template system

At this point you need to edit the views/layout.jade file and include the references to Bootsrap

html
  head
    title= title
    link(rel='stylesheet', href='/bootstrap/css/bootstrap.min.css')
    link(rel='stylesheet', href='/bootstrap/css/bootstrap-responsive.min.css')
    link(rel='stylesheet', href='/stylesheets/style.css')
    script(src='https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js')
    script(src='/bootstrap/js/bootstrap.min.js')
  body
    block content

Test the Bootstrap integration

At this point we will modify views/index.jade that is the default template used to render the index

extends layout

    block content
      div.top
        form.form-horizontal(method="post", id="loginForm")
          label Username
          input.span3(id="username", type="text", name="User", placeholder="Enter your username")
          label Password
          input.span3(id="password", type="password", name="Password")
          input.btn(type="submit", value="Log In")
      div.container
        div.content
          table.table.table-striped
            thead
              tr
                th Table
                th Heading
            tbody
              tr
                td Blah
                td Test
              tr
                td Hello
                td World

      div.footer

Now go back to the terminal and execute the app:

andrea@andrea-Inspiron-660:~/Documents/sviluppo/nodejs/node-bootstrap/nodebootstrap$ node app.js
Express server listening on port 3000

Open your favourite browse and visit http://localhost:3000 to see your first Bootstrap + Node.js application app and running.

How to install latest stable Node.js on Ubuntu

Posted on Fri 08 February 2013 in HowTo, Linux, Programmazione, Ubuntu (EN) • Tagged with Javascript, Node, Node.js, NodeJs

If you develop with Node.js and you want to be sure to have the latest stable version, luckly there is a PPA for it. All you need is to follow these instructions:

sudo apt-get install python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update 
sudo apt-get install nodejs npm

That's it!

Reference: https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager