CODEWITHSUNDEEP
javascriptcompression
JasonDavis
JasonDavis

Reputation: 48933

Can compressed javascript be uncompressed

Is it possible to uncompress (if that's the right term even) for code like below?

var vote=function(){var k={informModerator:-1,undoMod:0,acceptedByOwner:1,upMod:2,downMod:3,offensive:4,favorite:5,close:6,reopen:7,deletion:10,undeletion:11,spam:12};var f=imagePath+"vote-arrow-down.png";var c=imagePath+"vote-arrow-down-on.png";var x=imagePath+"vote-arrow-up.png";var w=imagePath+"vote-arrow-up-on.png";var A=imagePath+"vote-favorite-on.png";var o=imagePath+"vote-favorite-off.png";var l=function(){var C='<a href="/users/login?returnurl='+escape(document.location)+'">login or register</a>';$("div.vote").find("img").not(".vote-accepted").unbind("click").click(function(D){u($(D.target),"Please "+C+" to use voting.")});z().unbind("click").click(function(D){u($(D.target),"Please "+C+" to flag this post.")})};var B=function(C){if(!C){C="div.vote"}$(C).find("img.vote-

I did search stackoverflow for this question and found no results

Upvotes: 9

Views: 13388

Answers (5)

Serhat Koroglu
Serhat Koroglu

Reputation: 1259

There is a feature called "Pretty Print" at Source tab in Developer Tools of Google Chrome. Click on curly bracket icon and see the formatted code.

Here is a screen shot

Upvotes: 0

thedz
thedz

Reputation: 5572

In your specific example, you should be able to uncompress it.

Note, however, that most compressors will rename variables. At that point, the code is, IMO, no longer human readable.

var vote = function() {
    var k = {
        informModerator: -1,
        undoMod: 0,
        acceptedByOwner: 1,
        upMod: 2,
        downMod: 3,
        offensive: 4,
        favorite: 5,
        close: 6,
        reopen: 7,
        deletion: 10,
        undeletion: 11,
        spam: 12
    };
    var f = imagePath + "vote-arrow-down.png";
    var c = imagePath + "vote-arrow-down-on.png";
    var x = imagePath + "vote-arrow-up.png";
    var w = imagePath + "vote-arrow-up-on.png";
    var A = imagePath + "vote-favorite-on.png";
    var o = imagePath + "vote-favorite-off.png";
    var l = function() {
        var C = '<a href="/users/login?returnurl=' + escape(document.location) + '">login or register</a>';
        $("div.vote").find("img").not(".vote-accepted").unbind("click").click(function(D) {
            u($(D.target), "Please " + C + " to use voting.")
        });
        z().unbind("click").click(function(D) {
            u($(D.target), "Please " + C + " to flag this post.")
        })
    };
    var B = function(C) {
        if (!C) {
            C = "div.vote"
        }
        $(C).find("img.vote-")
    };

Upvotes: 0

John Lewis
John Lewis

Reputation:

If what you are trying to do is see the original variables used to describe the code, then no. You can always take the time to run it through a formatter to make it easier to read visually but the variable and function names are lost forever.

Upvotes: 0

CookieOfFortune
CookieOfFortune

Reputation: 13974

I think something like Eclipse can auto-format it for you. Won't be able to get back any of the original variable names though.

Upvotes: 0

Sampson
Sampson

Reputation: 268344

Yes. Copy / paste here: http://jsbeautifier.org/

That will only reformat the layout. You cannot restore variable/function names.

Related on MetaSO: Can we get an un-obfuscated version of the vote object?

Upvotes: 18

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