Scramble your Javascript
This plugin requires Grunt.
If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:
npm install grunt-scram --save-devOnce the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:
grunt.loadNpmTasks('grunt-scram');In your project's Gruntfile, add a section named scram to the data object passed into grunt.initConfig().
grunt.initConfig({
scram: {
options: {},
build: {
"./build/app.scram.min.js" : ["./build/app.min.js"],
},
},
})File you wish to scramble
File thats the scrambled result
Let's take an arbitrary piece of code in your build at app.js:
!(function(w,d) {
var img = d.createElement("img");
img.src = "http://placekitten.com/g/200/300";
var body = document.querySelector("body");
body.appendChild(img);
}(this, this.document));Now we add it to our Grunt task scram:
grunt.initConfig({
scram: {
options: {},
files: {
"./build/app.scram.js" : ["./app.js"]
}
}
})or...
grunt.initConfig({
scram: {
build : {
expand : true,
src : [ '*.js' ],
dest : 'build/js/',
cwd : 'build/js/'
}
}
})The contents may look like this then:
var data=
["\\x21","\\x28","\\x66","\\x75","\\x6e","\\x63",
/* some more hex... */
"\\x74","\\x29","\\x29","\\x3b","\\x0a"];
var x=""; data.forEach(function(s){x += String.fromCharCode(parseInt(s.substr(2), 16));}); eval(x)And we add it to our page:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title></title>
<meta name="description" content=""/>
<meta name="viewport" content="width=device-width"/>
</head>
<body>
<script src="build/build.scram.js" type="text/javascript"></script>
</body>
</html>Aaand we have kittens!
Here we simply set a destination file we want to scramble the script into. If it self bootsraps even better. The script will go through eval() to get it working.
grunt.initConfig({
scram: {
options: {},
files: {
"./build/app.scram.min.js" : ["./build/app.min.js"],
},
},
})In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.
(Nothing yet)
Copyright (c) 2014 Andreas Marschke. Licensed under the MIT license.