Live Preview: BrowserSync

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BrowserSync is a very useful helper when developing websites locally. It allows you to sync file changes with a browser preview and to browse websites using connected devices.

If you modify a CSS or HTML file, you will see the changes in a browser - you guessed it - without a page reload. Most of us are familiar with this anyway.

You can also display a local version of your website in a mobile browser. BrowserSync will help you with the IP address and when operating within the site (i.e. clicking links, filling in forms, scrolling). BrowserSync will perform identical actions on all connected devices.

BrowserSync and Grunt

BrowserSync is fully compatible with both Grunt and Gulp so all you need to do is install it and add the following configuration:

browserSync: {
  dev: {
    bsFiles: {
      src : [
        'dist/css/*.css'
      ]
    },
    options: {
      watchTask: true,
      proxy: 'project.localhost'
    }
  }
}

When you run a task, your command line will look something like this:

$ grunt browserSync
Running “browserSync:dev” (browserSync) task
[BS] Proxying: http://project.localhost
[BS] Access URLs:
 --------------------------------------
       Local: http://localhost:3000
    External: http://192.168.0.104:3000
 --------------------------------------
          UI: http://localhost:3001
 UI External: http://192.168.0.104:3001
 --------------------------------------
[BS] Watching files...

This way, BrowserSync will run your project at http://localhost:3000 as a proxy for your local URL project.localhost.

Your mobile device will be able to connect to the same network at http://192.168.0.104:3000.

Use the same URLs and port 3001 to display the BrowserSync app user interface.

The watchTask: true option in your task config says that all files are watched by the watch plugin (when changing files or you perform other operations) and BrowserSync will not stand in the way.

See more at browsersync.io.




Content

Introduction

Introduction

On today’s frontend UI development

UI development transformations

Tools, technologies and workflows

Fallback strategies

CSS3 reference guide

Introduction

Text properties

Background properties

Border properties

Box properties

Media Queries

CSS transforms

CSS animations

CSS3 Layout

Another CSS3 Properties

Non-standard properties

End

End

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