grunt-livereload

Refresh your CSS (or page) with each save via LiveReload.

grunt-livereload

Refresh your CSS (or page) with each save via LiveReload.

First, install this grunt plugin next to your project's grunt.js gruntfile with: npm install grunt-livereload

Second, add this line to your project's grunt.js gruntfile:

grunt.loadNpmTasks('grunt-livereload');

Third, have livereload monitor changes to browser-accessible resources. This part is crucial, as CSS, if specified correctly, can be reloaded without refreshing the entire page.

// grunt.js 
{
  ...
  livereload  : {
    options   : {
      base    : 'public',
    },
    files     : ['public/**/*']
  }
  ...
}

In this example, public/css/app.css will trigger a reload of the css/app.css resource only, while public/index.html will cause a full page refresh.

Finally, ensure your watch task doesn't process CSS at the same time it processes HTML, JS, and other resources that are being monitored:

// grunt.js 
{
  watch: {
    somecss: {
      files: '**/*.css',
      tasks: ['copy:somecss']
    },
    js: {
      files: '**/*.js',
      tasks: ['concat']
    }
  }
}

Many people watch everything and run their build process each time. This is unecessarily slow and prevents LiveReload from being able to see when only the .css has changed. So, it's recommended that you watch different types of files and perform only what's necessary to rebuild those.

This way, CSS is copied/processed alone and LiveReload will seamlessly replace the styles in your page without refreshing the whole browser.

  • Grunt 0.4 support (Thanks @xbudex!)
  • If livereload attempts to start an already-running server, it logs to the console rather than throwing an err. (This is common when clearing require.cache)
  • Refresh browser when livereload task is ran while server is running
  • Initial release

Copyright (c) 2013 Eric Clemmons Licensed under the MIT license.