Tool to Unminify / Decompress JavaScript [closed]

不问归期 提交于 2019-11-26 00:44:56

问题


Are there any command line scripts and/or online tools that can reverse the effects of minification similar to how Tidy can clean up horrific HTML?

(I\'m specifically looking to unminify a minified JavaScript file, so variable renaming might still be an issue.)


回答1:


You can use this : http://jsbeautifier.org/ But it depends on the minify method you are using, this one only formats the code, it doesn't change variable names, nor uncompress base62 encoding.

edit: in fact it can unpack "packed" scripts (packed with Dean Edward's packer : http://dean.edwards.name/packer/)




回答2:


Chrome developer tools has this feature built-in. Bring up the developer tools (pressing F12 is one way), in the Sources tab, the bottom left bar has a set of icons. The "{}" icon is "Pretty print" and does this conversion on demand.

UPDATE: IE9 "F12 developer tools" also has a "Format JavaScript" feature in the Script tab under the Tools icon there. (see Tip #4 in F12 The best kept web debugging secret)




回答3:


Got it! JSBeautifier does exactly this, and you even have options for the auto-formatting.




回答4:


Can't you just use a javascript formatter (http://javascript.about.com/library/blformat.htm) ?




回答5:


In Firefox, SpiderMonkey and Rhino you can wrap any code into an anonymous function and call its toSource method, which will give you a nicely formatted source of the function.

toSource also strips comments.

E. g.:

(function () { /* Say hello. */ var x = 'Hello!'; print(x); }).toSource()

Will be converted to a string:

function () {
    var x = "Hello!";
    print(x);
}

P. S.: It's not an "online tool", but all questions about general beautifying techniques are closed as duplicates of this one.




回答6:


If you have a Mac and TextMate - An easy alternative for formatting Javascript is:

  1. Open the file with Textmate.
  2. Click on > Bundles > JavaScript > Reformat Document
  3. Crack open a beer.



回答7:


Most of the IDEs also offer auto-formatting features. For example in NetBeans, just press CTRL+K.




回答8:


As an alternative (since I didn't know about jsbeautifier.org until now), I have used a bookmarklet that reenabled the decode button in Dean Edward's Packer.

I found the instructions and bookmarklet here.

here is the bookmarklet (in case the site is down)

javascript:for%20(i=0;i<document.forms.length;++i)%20{for(j=0;j<document.forms[i].elements.length;++j){document.forms[i].elements[j].removeAttribute(%22readonly%22);document.forms[i].elements[j].removeAttribute(%22disabled%22);}}



回答9:


I'm not sure if you need source code. There is a free online JavaScript formatter at http://www.blackbeltcoder.com/Resources/JSFormatter.aspx.




回答10:


Try this one, with code coloration:

http://labs.swelen.com/tools/javascript/beauty.html




回答11:


click on these link for JS deminification. That will install on FF as extension that help you in debugging js at runtime.

https://addons.mozilla.org/en-US/firefox/addon/javascript-deminifier/eula/141018?src=dp-btn-primary




回答12:


Similar to Stone's answer, but for Windows/.NET developers:

If you have Visual Studio and ReSharper - An easy alternative for formatting Javascript is:

  • Open the file with Visual Studio;
  • Click on ReSharper > Tools > Cleanup Code (Ctrl+E, C);
  • Select "Default: Reformat code", and click OK;
  • Crack open a beer.



回答13:


Despite its miles-away-from-being-pretty interface, JSPretty is a good, free and online tool for making javascript source codes human-readable. You can enforce your preferred type of indentation and it can also detect obfuscation.




回答14:


If one is in JS possibility of using Firefox is more. And if its Firefox add on is for rescue. Following one is particularly useful.

https://addons.mozilla.org/en-US/firefox/addon/phoenix/




回答15:


Pretty Diff will beautify (pretty print) JavaScript in a way that conforms to JSLint and JSHint white space algorithms.




回答16:


Wasn't really happy with the output of jsbeautifier.org for what I was putting in, so I did some more searching and found this site: http://www.centralinternet.com.br/javascript-beautifier

Worked extremely well for me.




回答17:


http://unminify.appspot.com/ Great tools for unminify javascript and json



来源:https://stackoverflow.com/questions/822119/tool-to-unminify-decompress-javascript

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