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Mobify.js is a library that allows you to make a number of different kinds of adaptations to your existing site for all kinds of different devices.

For instructions on how to use the library, follow the instructions on or build the docs site manually in the instructions below.



Mobify.js uses Grunt.js and Require.js to build the library, and manage all of the dependancies. First, you will need to install the grunt-cli globally:

npm install -g grunt-cli

And then download the latest code from git and install the dependancies:

git checkout
cd mobifyjs
npm install

Now, to build the library, simply run grunt:


Open the ./build folder to see the generated Mobify.js libraries.

Mobify.js uses Require.js mainly for dependency management, we don't use it for dynamic library loading when developing.

In order to build Mobify.js during development without having to run grunt everytime you change a file, run the following command:

grunt preview

This will run a development server on http://localhost:3000 using connect.

To see how the project is setup to build, open up Gruntfile.js and have a look!

Build Setup

Require.js is used to build Mobify.js.

  • src/config.js # The require.js base config for all build mobify.js builds

There are a number of files that define which modules to load in to build our various libraries.

  • src/mobify-full.js # Defines how to build the full mobify.js library
  • src/mobify-capture.js # Defines how to build the capture library only

There is also an example custom build file to make it simple to build a custom mobify.js library (or to compile the library with executable code)

  • mobify-custom.js.example

To create a custom build, run the following:

`cp mobify-custom.js.example mobify-custom.js`

Then, run grunt preview as normal. The output of the custom build will be located in ./build/custom.

Note: We use a mobifyjs symlink to resolve paths so they can be the same locally as they are on the CDN. This can be problematic for Windows.


Tests for Mobify.js are written in QUnit. To run them individually, run grunt preview and then go to http://localhost:3000/tests/capture.html or any other of the QUnit tests in the /tests/ folder.

To run all of the tests in an automated fashion using Phantomjs (the headless webkit browser) run the following command:

grunt test

It's also important when developing not to run into any regressions on all of the supported browsers. The Gruntfile is setup to be able to run qunit tests on many browsers we support (in order to do this yourself, you will need a Saucelabs Connect username and key).

cp localConfig.js.example localConfig.js
# Add your Saucelabs username and key to localConfig.js
grunt saucelabs

Browser support

  • All Webkit browsers (Safari, Chrome, Netfront, etc)
  • Firefox - version 4 and up
  • Opera - 11 and up (previous versions untested)
  • IE10 - TODO: Explain why not IE9 and previous


The compiled documentation for Mobify.js can be found online at

To compile the documentation yourself, install Jekyll and run it from www folder:

gem install jekyll
cd www
jekyll --server --auto

Then navigate to http://localhost:4000/mobifyjs/docs/.


When creating a build of for release, execute this command:

make buildstatic

And then copy the generated "_site" folder to where the site will be hosted.

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