Is there an offline version of JSLint for Windows?

Question

I would like to check my JavaScript files without going to JSLint web site.
Is there a desktop version of this tool for Windows?

Answer 1

Can you just save the page to your hard drive?

Answer 2

From http://www.jslint.com/lint.html:

The analysis is done by a script running on your machine. Your script is not sent over the network.

It is also available as a Konfabulator widget. You can check a file by dragging it and dropping it on the widget. You can recheck the file by double-clicking the widget.

It is also available in a WSH Command Line version.

It is also available in a Rhino Command Line version.

Or since JSLint is a JavaScript program running in your browser - you could grab the script and run it locally.

Answer 3

Just save the html page to your hard drive, and then download the .js files it uses to the same location. That's the beauty of JavaScript.

Answer 4

Most browsers have the ability to save an "entire" page, meaning that all external files such as StyleSheets, JavaScripts etc are also downloaded and properly linked into the HTML document (usually placed in a folder next to the HTML file). So, it should definitely be possible to use the tool offline.

Answer 5

You can also use JavaScript Lint on your machine,
get it from here
JavaScript Lint

There are instructions on how to integrate it into many editors/IDE's on the above site. I use it in UltraEdit and it works great.

From the above site

You can run JavaScript Lint several ways:

You can integrate it into your IDE, such as Visual Studio, SciTE, or any other IDE supporting external tools. When JavaScript Lint finds an error, your IDE takes you directly to the line containing the error.

You can run it through Windows Explorer, which Windows programmers may prefer.

You can use the command line to integrate into your build system, or maybe you're a Linux programmer and simply prefer the command line!

Thanks,
Greg

Answer 6

Some more answers (not all strictly for windows) over at jslint CLI options

Answer 7

Addendum to this old question: The WScript version of jslint.js produces error messages that are very much unlike error messages from any compiler.

If you want them to be similar, and if you want to be able to specify the name of the .js file in the command line, rather than using stdin to read the file, do this:

Download jslint.js, the WScript version.

Edit the jslint.js file. Scroll to the bottom and find this:

 (function(){if(!JSLINT(WScript.StdIn.ReadAll(),.....

Replace that (and everything that follows) with this:

(function(){
    var filename = "stdin";
    var content= "";
    if (WScript.Arguments.length > 0){
        filename = WScript.Arguments(0);
        var fso = new ActiveXObject("Scripting.FileSystemObject");
        //var file = fso.GetFile(filename);
        var fs = fso.OpenTextFile(filename, 1);
        content = fs.ReadAll();
        fs.Close();
        fso = null;
        fs = null;
    } else {
        content = WScript.StdIn.ReadAll();
    }
    if(!JSLINT(content,{passfail:false})){
        WScript.StdErr.WriteLine("JSLINT");
        for (var i=0; i<JSLINT.errors.length; i++) {
            // sample error msg:
            //  sprintf.js(53,42) JSLINT: Use the array literal notation [].
            var e=JSLINT.errors[i];
            if (e !== null){
                var line = (typeof e.line == "undefined")?'0':e.line;
                WScript.StdErr.WriteLine(filename + '(' +line+','+e.character+') JSLINT: '+e.reason);
                WScript.StdErr.WriteLine('    ' + (e.evidence||'').replace(/^\s*(\S*(\s+\S+)*)\s*$/,"$1"));
            }
        }}}());

This change does two things:

1. allows you to specify the file to run lint on, on the command line, rather than as stdin. Stdin still works if no file is specified at all.
2. emits the error messages in a format that is more similar to most C/C++ compilers.

---

Then, in a cmd.exe prompt, you can do:

cscript.exe  jslint.js   MyJavascriptModule.js 

and you will get error messages like so:

JSLINT
MyJavascriptModule.js(7,17) JSLINT: 'xml' is already defined.
    var xml = new ActiveXObject("Microsoft.XMLHTTP");
MyJavascriptModule.js(10,5) JSLINT: 'xml' used out of scope.
    xml.open("GET", url, true);
MyJavascriptModule.js(11,9) JSLINT: 'xml' used out of scope.
    if (xml.overrideMimeType) {
MyJavascriptModule.js(12,9) JSLINT: 'xml' used out of scope.
    xml.overrideMimeType('text/plain; charset=x-user-defined');
MyJavascriptModule.js(14,9) JSLINT: 'xml' used out of scope.
    xml.setRequestHeader('Accept-Charset', 'x-user-defined');
MyJavascriptModule.js(17,5) JSLINT: 'xml' used out of scope.
    xml.onreadystatechange = function() {
MyJavascriptModule.js(28,5) JSLINT: 'xml' used out of scope.
    xml.send('');
MyJavascriptModule.js(34,16) JSLINT: Expected '{' and instead saw 'url'.
    if (proxy) url = proxy + '?url=' + encodeURIComponent(url);
MyJavascriptModule.js(51,16) JSLINT: Expected '{' and instead saw 'url'.
    if (proxy) url = proxy + '?url=' + encodeURIComponent(url);

Answer 8

You can integrate the tool this guy has made into Visual Studio.

http://jason.diamond.name/weblog/2008/08/09/verifying-javascript-with-jslint-and-visual-studio/#content

Just disable the options you don't need.

Answer 9

A Visual Studio addin can be found here.

It is a bit rough but gets the job done.

I have just joined the project and will be bringing it up to date in the next few months.

Answer 10

MiniME is an alternative to JSLint that runs native under windows which you might find useful.

Full disclosure, I'm behind this: http://www.toptensoftware.com/minime which does minification, obfuscation and a reasonable set of lint style checks.