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    jquery.terminal
    TypeScript icon, indicating that this package has built-in type declarations

    2.26.0 • Public • Published
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             \/          /____/                      version 2.26.0
    

    JavaScript Library for Web Based Terminal Emulators

    npm bower travis Coverage Status downloads LICENSE MIT

    Paid Support

    Summary

    jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications. It can automatically call JSON-RPC service when a user types commands or you can provide your own function in which you can parse user commands. It's ideal if you want to provide additional functionality for power users. It can also be used to debug your application.

    You can use this JavaScript library to create a web based terminal on any website.

    Because with this library you need to code all the commands yourself, you can call it fake terminal emulator. In contrast to library that will give you access to real terminal like online SSH. To have real online SSH I suggest to use xterm.js library.

    Features:

    • You can create an interpreter for your JSON-RPC service with one line of code (just use url as first argument).

    • Support for authentication (you can provide functions when users enter login and password or if you use JSON-RPC it can automatically call login function on the server and pass token to all functions).

    • Stack of interpreters - you can create commands that trigger additional interpreters (eg. you can use couple of JSON-RPC service and run them when user type command)

    • Command Tree - you can use nested objects. Each command will invoke a function, if the value is an object it will create a new interpreter and use the function from that object as commands. You can use as many nested object/commands as you like. If the value is a string it will create JSON-RPC service.

    • Support for command line history, it uses Local Storage if possible.

    • Support for tab completion.

    • Includes keyboard shortcut from bash like CTRL+A, CTRL+D, CTRL+E etc.

    • Multiple terminals on one page (every terminal can have different commands, its own authentication function and its own command history).

    • It catches all exceptions and displays error messages in the terminal (you can see errors in your javascript and php code in terminal if they are in the interpreter function).

    • Using extended commands you can change working of the terminal without touching the front-end code (using echo method and terminal formatting like syntax). Read more in docs

    • Full mobile support

    Installation

    Include jQuery library, you can use cdn from https://jquery.com/download/

    <script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>

    Then include js/jquery.terminal-2.26.0.min.js and css/jquery.terminal-2.26.0.min.css

    You can grab the files from CDN:

    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.terminal/2.26.0/js/jquery.terminal.min.js"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/jquery.terminal/2.26.0/css/jquery.terminal.min.css" rel="stylesheet"/>

    or

    <script src="https://cdn.jsdelivr.net/npm/jquery.terminal@2.26.0/js/jquery.terminal.min.js"></script>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/jquery.terminal@2.26.0/css/jquery.terminal.min.css">

    If you always want latest version, you can get it from unpkg without specifying version, it will redirect to the latest ones:

    <script src="https://unpkg.com/jquery.terminal/js/jquery.terminal.min.js"></script>
    <link href="https://unpkg.com/jquery.terminal/css/jquery.terminal.min.css" rel="stylesheet"/>

    Bleeding Edge Version

    If you want to test bleeding edge, development version of jQuery Terminal. You can use those files:

    <script src="https://cdn.jsdelivr.net/gh/jcubic/jquery.terminal@devel/js/jquery.terminal.min.js"></script>
    <link href="https://cdn.jsdelivr.net/gh/jcubic/jquery.terminal@devel/css/jquery.terminal.min.css" rel="stylesheet"/>

    but it's not refreshed as fast as rawgit was, because it's CDN and need to be propagated to different servers.

    Keyboard key polyfill

    NOTE: From version 1.0.0 if you want to support old browsers then you'll need to use key event property polyfill. You can check the support for it on can I use.

    <script src="https://unpkg.com/js-polyfills@0.x.x/keyboard.js"></script>

    Command Line

    You can also install jQuery Terminal using command line, from bower repository:

    bower install jquery.terminal
    

    or npm registry:

    npm install jquery.terminal
    

    Example of usage

    This is code that uses low level function, that gives you full control of the commands, just pass anything that the user types into a function.

    jQuery(function($, undefined) {
        $('#term_demo').terminal(function(command) {
            if (command !== '') {
                var result = window.eval(command);
                if (result != undefined) {
                    this.echo(String(result));
                }
            }
        }, {
            greetings: 'Javascript Interpreter',
            name: 'js_demo',
            height: 200,
            width: 450,
            prompt: 'js> '
        });
    });

    Here is a higher level call, using an object as an interpreter, By default the terminal will parse commands that a user types and replace number like strings with real numbers regex with regexes and process escape characters in double quoted strings.

    jQuery(function($, undefined) {
        $('#term_demo').terminal({
            add: function(a, b) {
                this.echo(a + b);
            },
            re: function(re, str) {
               if (re instanceof RegExp && re.test(str)) {
                  this.echo(str + ' [[;green;]match]');
               }
            },
            foo: 'foo.php',
            bar: {
                sub: function(a, b) {
                    this.echo(a - b);
                }
            }
        }, {
            height: 200,
            width: 450,
            prompt: 'demo> '
        });
    });

    command add 2 2 will display 4 (not 22).

    Command foo will change prompt to foo> and each new command will execute json-rpc method from foo.php script.

    command bar will change the prompt to bar> and if you type sub 10 2 it will display 8. To exit from bar nested command you can type exit or press CTRL+D.

    command re /^foo/ foo-bar will echo: "foo-bar match" where "match" will be green.

    By default arguments are required but you can disable the check like this:

    jQuery(function($, undefined) {
        $('#term_demo').terminal({
            add: function(...args) {
                this.echo(args.reduce((a,b) => a + b));
            }
        }, {
           checkArity: false
        });
    });

    And add command will accept any number of argments and it will sum them up (if they are numbers).

    You can create JSON-RPC interpreter with authentication in just one line:

    $('#term_demo').terminal('service.php', {login: true});

    The rest of the code can be on the server, so you can write fully working application, without any front-end, that can be tested in browser.

    First argument to terminal can also be array with objects strings and functions, with one requirement, that only one function can be used as last fallback for commands that was not found in RPC or in objects.

    jQuery(function($, undefined) {
        $('#term_demo').terminal([{
            add: function(...args) {
                this.echo(args.reduce((a,b) => a + b));
            }
        } 'foo.php', function(command) {
           this.echo("You've typed " + command, {formatters: false, exec: false});
        }], {
           checkArity: false
        });
    });

    More examples here. You can also check Full Documentation or Getting Started Guide on Wiki.

    Quick Start Tutorials

    If you want to start with jQuery Terminal you can look at those tutorials:

    Security

    Because of security in version 1.20.0 links with protocols different than ftp or http(s) (it was possible to enter javascript protocol, that could lead to XSS if author of the app echo user input and save it in DB) was turn off by default. To enable it, you need to use anyLinks: true option.

    In version 1.21.0 executing terminal methods using extendend commands [[ terminal::clear() ]] was also disabled by default because attacker (depending on your application) could execute terminal::echo with raw option to enter any html and execute any javascript. To enable this feature from this version you need to use invokeMethods: true option.

    The features are safe to enable, if you don't save user input in DB and don't echo it back to different users (like with chat application). It's also safe if you escape formatting before you echo stuff.

    If you don't save user input in DB but allow to echo back what user types and have enabled execHash options, you may have reflected XSS vulnerability if you enable this features. If you escape formatting this options are also safe.

    NOTE: To disable exec if you have execHash (or echo stuff from users with invokeMethods: true), you can also set option {exec: false} to your echo call and use it only when you get values from server (not from DB indireclty from users). If you do this you will be able to echo stuff from users and execute terminal methods from server (this feature is mostly done just for that).

    Contributors

    If you want to contribute read CONTRIBUTING.md first. Here are project contributors:


    Jakub T. Jankiewicz

    commits

    Hood Chatham

    commits

    Zuo Qy

    commits

    Marcel Link

    commits

    Sébastien Warin

    commits

    Christopher John Ryan

    commits

    Johan

    commits

    Florian Schäfer

    commits

    David Refoua

    commits

    Ishan Ratnapala

    commits

    Tomasz Ducin

    commits

    7twin

    commits

    Abdelrahman Omran

    commits

    Anton Vasil'ev

    commits

    finlob

    commits

    Hasan

    commits

    Hraban Luyat

    commits

    Jarry Shaw

    commits

    Jon Steinich

    commits

    Martin v. Löwis

    commits

    Mateusz Paprocki

    commits

    exit1

    commits

    Robert Wikman

    commits

    Steve Phillips

    commits

    Yutong Luo

    commits

    coderaiser

    commits

    mrkaiser

    commits

    stereobooster

    commits

    Steve Kirkegard

    commits

    Juraj Vitko

    commits

    jQuery Terminal Website contributors:


    Jakub T. Jankiewicz

    commits

    Marc Laporte

    commits

    Rich Morin

    commits

    DInesh51297

    commits

    Logan Rosen

    commits

    Credits

    Projects used:

    Paid Support

    If you have some non-trivial request or need help, you can get paid support at xs:code.

    License

    Licensed under MIT license

    Copyright (c) 2011-2021 Jakub T. Jankiewicz

    Install

    npm i jquery.terminal

    DownloadsWeekly Downloads

    47,714

    Version

    2.26.0

    License

    MIT

    Unpacked Size

    2.28 MB

    Total Files

    25

    Last publish

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