Install Grunt JS on Windows – Tutorial

Before you install Grunt.js you will need to have node.js installed. For this tutorial I have node.js v0.10.0 installed.

I will be installing Grunt.js v0.4.1. WARNING if you have Grunt.j 0.3.x or less you will need to uninstall it first.

Grunt’s command line interface (CLI)

To get grunt.js installed we need to first install Grunt’s command line interface (CLI) globally. Current version is 1.0.6. Open up Windows Command Prompt and put in the command below:

npm install grunt-cli -g

This will put the grunt command in your system path, allowing it to be run from any directory.

Windows Tip – Open Command Prompt from Folder (Two Ways)

  1. Type cmd into the address bar and hit enter
  2. Hold Shift while Right-Clicking a blank space in the folder and select Open Command Window Here.

Folder and Package JSON Setup

Now we need to install Grunt.js. With Windows Command Prompt navigate to our project folder. I like to put all my build files into a folder called “_build”. So for this example the path is “C:\Users\codebelt\Desktop\first-grunt-project\_build”.

There are a few different ways to get Grunt.js and other plugins installed but I will be showing you the easiest way (I think). We need to create a “package.json” and put it in our “_build” folder. Copy and past code below and put in the “package.json”

  "name": "Test-Project",
  "version": "0.1.0",
  "devDependencies": {
    "grunt": "~0.4.1",
    "grunt-contrib-concat": "~0.1.3"

When the next command below is ran it will install grunt v0.4.1 and the grunt plugin concat v0.1.3 into the “_build” folder.

Here is the command:

npm install

Grunt File Setup

Now Grunt.js and the Concat plugin should be installed. Now we need to add a Grunt file to configure and build our project. Create a “Gruntfile.js” file inside the “_build” folder and paste in the code below.

module.exports = function(grunt) {

    // Project configuration.

        //Read the package.json (optional)
        pkg: grunt.file.readJSON('package.json'),

        // Metadata.
        meta: {
            basePath: '../',
            srcPath: '../src/',
            deployPath: '../deploy/'

        banner: '/*! <%= %> - v<%= pkg.version %> - ' +
                '<%="yyyy-mm-dd") %>\n' +
                '* Copyright (c) <%="yyyy") %> ',

        // Task configuration.
        concat: {
            options: {
                stripBanners: true
            dist: {
                src: ['<%= meta.srcPath %>scripts/fileone.js', '<%= meta.srcPath %>scripts/filetwo.js'],
                dest: '<%= meta.deployPath %>scripts/app.js'

    // These plugins provide necessary tasks.

    // Default task
    grunt.registerTask('default', ['concat']);


If you look you can see I have created a fileone.js and filetwo.js file and placed them into the ../src/scripts directory. This GruntJS script will take those files and export into the ../deploy/scripts folder as app.js. I am using <%= meta.srcPath %> as a constant or base path to my src folder. This allows me to change the base path in one location than having it hard coded all over the Gruntfile.

Now type “grunt” into Windows Command Prompt and watch the magic happen.


That will run the Default task and concatenate the two js files into one. Try it out, I hope this works for you. You should see the output in Windows Command Prompt say:

Running "concat:dist" (concat) task
File "../deploy/scripts/app.js" created.

Done, without errors.

You can download the example files for this tutorial here:

23 Responses to “Install Grunt JS on Windows – Tutorial”

  1. Thank you for this article! Much, much more straightforward than the “getting started” document on the Grunt site. With your help, I was able to get Grunt up and running =)

    The one thing that your article might have done to make the process even clearer is to indicate the need to create fileone.js and filetwo.js files and place them in the ../src/scripts directory in order for the build process to run as expected.

    It kind of surprised me that Grunt didn’t throw an error when it couldn’t find the files. Anyhow, after adding the files, everything ran and concatenated as expected. Thanks again!

    • Thanks for the comment. I have updated the article. I also have the files for download to help people if they got stuck.

  2. John Wollner Says:
    July 24, 2013 at 11:07 am

    This really helps – been struggling to put the pieces together on grunt.

  3. […] These instructions from codeBelt worked nicely. […]

  4. A fantastic article for installation of gruntjs !! Helps a lot!! Really Thanks!!

  5. Thank you very much for the tutorial, as a designer getting started with Grunt was tough, no visual software just command prompt. Your explanation in this page really help out a lot :D

  6. Sandeep Upadhyay Says:
    April 3, 2014 at 5:06 am

    Thanks so much Robert, your tutorial is very simple and easy to understand. Today I have start learning Grunt and your tutorial help me to go one step ahead. Now I want to do little bit more like minify:-

    Can you please help me to minify my custom.js file as custom.min.js

    Here is the code Gruntfile.js which I’m trying:-

    module.exports = function(grunt) {

    // Project configuration.

    dest: ‘../src/scripts/custom.min.js’


    But I’m getting error in window – cmd as:-

    Warning: Task “default” not found. Use –force to continue
    Aborted due to warnings.

    • I think it be because you don’t have the required “default” grunt task:

      grunt.registerTask('default', [

      It should look like this:
      I think it be because you don’t have the required “default” grunt task:

      module.exports = function(grunt) {
      // Project configuration.
      dest: '../src/scripts/custom.min.js'
      grunt.registerTask('default', [

      I’ve used grunt-contrib-uglify before and it great for getting started with minifying.

  7. Влад Says:
    May 17, 2014 at 12:22 am

    Hey, even without knowing the English could not understand your article, thank you!

  8. Nice Post :) Thanks you.

    How can I find the grunt watch config ?


  9. Late to the party here but wanted to say thank you. This saved me a ton of time!

  10. Thank you it was really helpful for getting started with Grunt on Windows platform.

  11. Thanks a lot for sharing this article. Its really helpful and a nice post.

  12. A random Coder Says:
    February 1, 2015 at 11:03 am

    Thank You

  13. Krunal Shah Says:
    February 5, 2015 at 3:13 am

    simple. concise. precise.

    Thanks Robert for such a wonderful article. It saves my day.

  14. Hi, please, can you help me with one problem, i install nodejs on window 8 and try to use grunt, i install grunt via npm, but when i try to use command grunt in windows console i get the error – grunt: command not found, thank you

  15. Thanks for the article. it really works.. I have an angular project having js files in different folder and I want to minify all the js files and placing in their respective folders . How can i do this ?

  16. Thanks for the tutorial.
    How to run cmd on any path easily was an awesome trick and that also saved my ass in some way.
    Much appreciated.

  17. Omer Hussain Says:
    October 21, 2015 at 1:03 am

    Hi Robert,

    Tutorial is very informative :)

    Can we use external source to get the files like:

    // Metadata.
    meta: {
    basePath: ‘../’,
    srcPath: ‘’,
    deployPath: ‘../template/’


    Thanks Omer

  18. Mark Griffin Says:
    October 11, 2016 at 1:39 pm


    One of my questions is do you have to a package.json and a gruntfile.js in every javascript project where you are going to use grunt to build the project?

  19. Ransford Says:
    May 17, 2017 at 10:39 am

    Hi Robert,

    Everything seemed to be moving smoothly till the fileone.js and filetwo.js thing came in. Don’t really know how to take it on from there. Don’t know where to find the link to download the example files (don’t know if they are the fileone.js and filetwo.js) after the “You can download the example files here:” text.

    Please Advice.

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