Let's Write Code

All the code examples for the youtube series Let's Write Code

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Dev Setup

Throughout these videos I typically use the same development environment. This is a guide through that development setup.

Dependencies

Rather than copying / pasting script tags into my HTML for 3rd party code, I use npm. The npm command comes with Node.js. When I run npm install jquery, it downloads the 3rd party files into the node_modules/jquery/ folder.

The package.json file can hold those dependencies and versions, so the next time you want to install those files, run npm install in the same folder.

Build Tool

Browserify is a tool that reads your JavaScript source files and files you've installed with npm. Then outputs those files loaded in the correct order to a single bundled file.

You can install the browserify command on your machine with: npm install browserify -g.

To create a bundled file, run browserify index.js -o bundle.js, where index.js is the entry point to all your scripts.

In your index.js file, you can include other files with require('./other.js') or a 3rd party file installed with npm by doing require('jquery').

Once you have generated this bundle.js file, you can add a single script tag in your HTML: <script src="bundle.js"></script> and host those assets like any other HTML, JavaScript and CSS files.

Dev Server

While rapidly developing, running the browserify command every time you make a change in the code can get tedious. Also having to FTP, git push or some other method to deploy the code to a server can slow your development down.

I use a tool called budo which runs a server locally on your machine (http://localhost:9966) and automatically bundles your code with Browserify as you refresh the page or live as you make changes if you have the --live option on.

Install the budo command with: npm install budo and run the server with: budo index.js. Now you can rapidly develop the code by viewing localhost:9966.

For convenience, I add the budo command to the scripts section of my package.json:

{
  "scripts": {
    "start": "budo index.js"
  }
}

Now I only need to run npm start to start developing code.

Deployment

After you're done developing the code, run browserify index.js -o bundle.js to create your JavaScript bundle. Add the script tag to your HTML: <script src="bundle.js"></script> to load that JavaScript file.

Then upload those files to your remote server. Either via FTP/SFTP, git deploying, heroku, firebase or whatever method you normally use to deploy your website.

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