hide your JavaScript

If there is a reason why you don’t want humans to read your JavaScript code, you can use the packer from
http://dean.edwards.name/packer/ to obfuscated it (online).

The packer compress the code to one line, deletes all comments and has the option to encode it with Base62. You can put the generated code in your code, it should work with any browser.
You must correctly terminate all JavaScript statements with semi-colons.

Here an example script and the output from the packer:

var a, b;

a = “hello “;
b = “world!”;

function send_msg(a, b) {
// alert a and b
alert(a +b);

send_msg(a, b);

after packing

var a,b;a=”hello “;b=”world!”;function send_msg(a,b){alert(a+b)}send_msg(a,b);

after packing and Base62 encoding

eval(function(p,a,c,k,e,r){e=String;if(!”.replace(/^/,String)){while(c–)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return’\w+’};c=1};while(c–)if(k[c])p=p.replace(new RegExp(‘\b’+e(c)+’\b’,’g’),k[c]);return p}(‘6 0,1;0=”5 “;1=”3!”;4 2(0,1){7(0+1)}2(0,1);’,8,8,’a|b|send_msg|world|function|hello|var|alert’.split(‘|’),0,{}))

2 comments so far

  1. Schwarzkophf on

    Nice info …
    Thanks for share …

  2. ali on


    re: hide js

    nice article…

    how about PHP ? – what’s the best way of protecting PHP source code in you opinion/experience?


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