ASCII Art that represent text jQuery Terminal - JavaScript Library for Web Based Terminal Emulators

[JavaScript Library for Web Based Terminal Emulators](https://terminal.jcubic.pl) [![npm](https://img.shields.io/badge/npm-2.35.3-blue.svg)](https://www.npmjs.com/package/jquery.terminal) ![bower](https://img.shields.io/badge/bower-2.35.3-yellow.svg) [![Build and test](https://github.com/jcubic/jquery.terminal/actions/workflows/build.yaml/badge.svg?branch=master&event=push)](https://github.com/jcubic/jquery.terminal/actions/workflows/build.yaml) [![Coverage Status](https://coveralls.io/repos/github/jcubic/jquery.terminal/badge.svg?branch=master&6a28c3fcec066d2f647e95cc485b1277)](https://coveralls.io/github/jcubic/jquery.terminal?branch=master) ![downloads](https://img.shields.io/npm/dm/jquery.terminal.svg?style=flat) [![Paid Support](https://data.jsdelivr.com/v1/package/npm/jquery.terminal/badge?style=rounded)](https://www.jsdelivr.com/package/npm/jquery.terminal) [![](https://img.shields.io/badge/paid-support-354465.svg)](https://support.jcubic.pl/) [![LICENSE MIT](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/jcubic/jquery.terminal/blob/master/LICENSE) ### 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](https://github.com/xtermjs/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 (own REPL), 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. * Bash reverse history search (CTRL+R / CTRL+G). * You can create and overwrite existing keyboard shortcuts. * 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](https://terminal.jcubic.pl/api_reference.php#extended_commands). * Easy way to change the style of the terminal (like color or cursor animation). * Chinese and Japanese character support. * You can use ASCII forms and collect information from users. * Animation (including typing effect and Canvas canvas adapter). * Support ANSI escapes codes. * Experimental mobile support, see [open issues](https://github.com/jcubic/jquery.terminal/labels/mobile) ### Demo You can test current version at this URL: * [https://jcubic.github.io/jquery.terminal/](https://jcubic.github.io/jquery.terminal/) or if it doesn't use latest version (because of jsDelivr cache) you can force it with this URL: * [https://jcubic.github.io/jquery.terminal/?ver=2.35.3](https://jcubic.github.io/jquery.terminal/?ver=2.35.3) And development version using: * [https://jcubic.github.io/jquery.terminal/?ver=devel](https://jcubic.github.io/jquery.terminal/?ver=devel) You can use any version you want, everything what [jsDelivr GH API accepts](https://www.jsdelivr.com/?docs=gh). ### Installation Include jQuery library, you can use cdn from https://jquery.com/download/ ```html ``` Then include js/jquery.terminal-2.35.3.min.js and css/jquery.terminal-2.35.3.min.css You can grab the files from CDN: ```html ``` or ```html ``` If you always want latest version, you can get it from [unpkg](https://unpkg.com/) without specifying version, it will redirect to the latest ones: ```html ``` #### Bleeding Edge Version If you want to test bleeding edge, development version of jQuery Terminal. You can use those files: ```html ``` 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](https://rawgit.com/inexorabletash/polyfill/master/keyboard.js). You can check the support for it on [can I use](https://caniuse.com/#feat=keyboardevent-key). ```html ``` #### Command Line You can also install jQuery Terminal using command line, from [bower repository](https://bower.io/): ``` bower install jquery.terminal ``` or [npm registry](https://www.npmjs.com/): ``` 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. ```javascript jQuery(function($, undefined) { $('#term_demo').terminal(function(command) { if (command !== '') { var result = window.eval(command); if (result != undefined) { this.echo(String(result)); } } }, { greetings: 'Javascript Interpreter', name: 'js_demo', height: 200, width: 450, prompt: 'js> ' }); }); ``` Here is a higher level call, using an object as an interpreter, By default the terminal will parse commands that a user types and replace number like strings with real numbers regex with regexes and process escape characters in double quoted strings. ```javascript jQuery(function($, undefined) { $('#term_demo').terminal({ add: function(a, b) { this.echo(a + b); }, re: function(re, str) { if (re instanceof RegExp && re.test(str)) { this.echo(str + ' [[;green;]match]'); } }, foo: 'foo.php', bar: { sub: function(a, b) { this.echo(a - b); } } }, { height: 200, width: 450, prompt: 'demo> ' }); }); ``` command `add 2 2` will display `4` (not `22`). Command `foo` will change prompt to `foo>` and each new command will execute json-rpc method from foo.php script. command `bar` will change the prompt to `bar> ` and if you type `sub 10 2` it will display 8. To exit from bar nested command you can type `exit` or press CTRL+D. command `re /^foo/ foo-bar` will echo: "foo-bar match" where "match" will be green. By default arguments are required but you can disable the check like this: ```javascript jQuery(function($, 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: ```javascript $('#term_demo').terminal('service.php', {login: true}); ``` The rest of the code can be on the server, so you can write fully working application, without any front-end, that can be tested in browser. First argument to terminal can also be array with objects strings and functions, with one requirement, that only one function can be used as last fallback for commands that was not found in RPC or in objects. ```javascript jQuery(function($, 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](http://terminal.jcubic.pl/examples.php). You can also check [Full Documentation](http://terminal.jcubic.pl/api_reference.php) or [Getting Started Guide on Wiki](https://github.com/jcubic/jquery.terminal/wiki/Getting-Started). ### Quick Start Tutorials If you want to start with jQuery Terminal you can look at those tutorials: * [How to create interactive terminal like website?](https://itnext.io/how-to-create-interactive-terminal-like-website-888bb0972288) * [How to Build Simple Terminal like Website using jQuery?](https://www.geeksforgeeks.org/how-to-build-simple-terminal-like-website-using-jquery/) ### 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](CONTRIBUTING.md) first. Here are project contributors: | [
Jakub T. Jankiewicz](https://jcubic.pl/me)
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Hood Chatham](https://github.com/hoodmane)
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Jean-Michel Carrel](https://github.com/Neyxo)
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Marcel Link](https://github.com/ml1nk)
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Sébastien Warin](http://sebastien.warin.fr)
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Christopher John Ryan](https://github.com/ChrisJohnRyan)
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Qijia Liu](https://github.com/eagleoflqj)
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Jakub T. Jankiewicz](https://jcubic.pl/me)
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Ezinne Anne Emilia](https://github.com/ezinneanne)
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[commits](https://github.com/jcubic/jquery.terminal-www/commits?author=loganrosen) | | :---: | :---: | :---: | :---: | :---: | :---: | :---: | ### Acknowledge Projects include with the source code: * [Storage plugin](https://sites.google.com/site/daveschindler/jquery-html5-storage-plugin) by Dave Schindler (MIT) * [jQuery Timers](http://jquery.offput.ca/every/) (WTFPL) * [Cross-Browser Split](http://blog.stevenlevithan.com/archives/cross-browser-split) by [Steven Levithan](http://stevenlevithan.com/) (MIT) * [jQuery Caret](https://github.com/accursoft/caret) by Gideon Sireling (3-BSD) * [sprintf.js](https://github.com/alexei/sprintf.js) by [Alexandru Mărășteanu](http://alexei.ro/) (3-BSD) * [node-ansiparser](https://github.com/netzkolchose/node-ansiparser) by Joerg Breitbart (MIT) * [emoji regex](https://github.com/mathiasbynens/emoji-regex) by Mathias Bynens (MIT) Other code used inside the project or inspired by: * [How to detect iPad and iPad OS version in iOS 13 and Up?](https://stackoverflow.com/a/57924983/387194s) (StackOverflow) * [How do I scroll to an element within an overflowed Div?](https://stackoverflow.com/a/18927969/387194) (StackOverflow) * [isInViewport](https://github.com/zeusdeux/isInViewport) by Mudit Ameta (MIT) * [Detecting and generating CSS animations in JavaScript](https://hacks.mozilla.org/2011/09/detecting-and-generating-css-animations-in-javascript/) by Chris Heilmann * [polyfill for `KeyboardEvent.prototype.key`](https://github.com/cvan/keyboardevent-key-polyfill/) by Christopher Robert Van Wiemeersch (CC0) * [wheel event detection](https://web.archive.org/web/20180523065743/https://developer.mozilla.org/en-US/docs/Web/Events/wheel) by MDN * [CodeMirror](https://codemirror.net/) by Marijn Haverbeke, was inspiration for some clipboard handling solutions. Personal thanks: * [T.J. Crowder](https://stackoverflow.com/users/157247/t-j-crowder) for helping with tracking_replace on [StackOveflow](https://stackoverflow.com/a/46756077/387194) * [@jerch](https://github.com/jerch) for helping with ANSI Parsing Also thanks to: [![BrowserStack](https://user-images.githubusercontent.com/587740/39730261-9c65c4d8-522e-11e8-9f12-16b349377a35.png)](http://browserstack.com/) for cross-device testing opportunity. ### Paid Support You can request paid support, you can find details at [support.jcubic.pl](https://support.jcubic.pl/). ### License Licensed under [MIT](http://opensource.org/licenses/MIT) license Copyright (c) 2011-2022 [Jakub T. Jankiewicz](https://jcubic.pl/me)