Run JavaScript in Visual Studio Code

Question

Is there a way to execute JavaScript and display the results using Visual Studio Code   For example  a script file containing   console log  hello world      I assume that Node js would be needed but can t work out how to do it      By Visual Studio Code I mean the new Code Editor from Microsoft -   Not code written using Visual Studio

User · Answer

Another way would be to open terminal ctrl   execute node  Now you have a node REPL active  You can now send your file or selected text to terminal  In order to do that open VSCode command pallete  F1 or ctrl shift p  and execute  gt run selected text in active terminal or  gt run active file in active terminal   If you need a clean REPL before executing your code you will have to restart the node REPL  This is done when in the Terminal with the node REPL ctrl c ctrl c to exit it and typing node to start new   You could probably key bind the command pallete commands to whatever key you wish   PS  node should be installed and in your path

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There are many ways to run javascript in Visual Studio Code   If you use Node  then I recommend use the standard debugger in VSC   I normally create a dummy file  like test js where I do external tests   In your folder where you have your code  you create a folder called   vscode  and create a file called  launch json   In this file you paste the following and save  Now you have two options to test your code   When you choose  Nodemon Test File  you need to put your code to test in test js   To install nodemon and more info on how to debug with nodemon in VSC I recommend to read this article  which explain in more detail the second part on the launch json file and how to debug in ExpressJS          version    0 2 0        configurations                            type    node                request    launch                name    Nodemon Test File                runtimeExecutable    nodemon                program      workspaceFolder  test js                restart   true               console    integratedTerminal                internalConsoleOptions    neverOpen                                    type    node                request    attach                name    Node  Nodemon                processId      command PickProcess                 restart   true               protocol    inspector

User · Answer

There is a much easier way to run JavaScript  no configuration needed    Install the Code Runner Extension Open the JavaScript code file in Text Editor  then use shortcut Control Alt N  or   Control   Option N on macOS   or press F1 and then select type Run Code  the code will run and the output will be shown in the Output Window    Besides  you could select part of the JavaScript code and run the code snippet  The extension also works with unsaved files  so you can just create a file  change it to Javascript and write code fast  for when you just need to try something quick   Very convenient

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Another option is to use the developer tools console within Visual Studio Code  Simply select  Toggle Developer Tools  from the help menu and then select the  Console  tab in the developer tools that pop up  From there you have the same dev tools REPL that you get in Chrome

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There is no need to  set the environment for running the code on javascript python etc in visual studio code what you have to do is just install the Code Runner Extension and then just select the part of the code you want to run and hit the run button present on the upper right corner

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This solution intends to run currently open file in node and show output in VSCode   I had the same question and found newly introduced tasks useful for this specific use case  It is a little hassle  but here is what I did   Create a  vscode directory in the root of you project and create a tasks json file in it  Add this task definition to the file          version    0 1 0        command    node        isShellCommand   true       args              --harmony               tasks                            taskName    runFile                suppressTaskName   true               showOutput    always                problemMatcher     jshint                args       file                        Then you can   press F1  gt  type  run task   gt  enter  gt  select  runFile   gt  enter to run your task  but I found it easier to add a custom key binding for opening tasks lists   To add the key binding  in VSCode UI menu  go  Code     Preferences     Keyboard Shortcuts   Add this to your keyboard shortcuts          key    cmd r        command    workbench action tasks runTask      Of course you can select whatever you want as key combination   UPDATE   Assuming you are running the JavaScript code to test it  you could mark your task as a test task by setting its isTestCommand property to true and then you can bind a key to the workbench action tasks test command for a single-action invocation   In other words  your tasks json file would now contain          version    0 1 0        command    node        isShellCommand   true       args              --harmony               tasks                            taskName    runFile                isTestCommand   true               suppressTaskName   true               showOutput    always                problemMatcher     jshint                args       file                           and your keybindings json file would now contain          key    cmd r        command    workbench action tasks test

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This may now be the easiest  as of v1 32          key    ctrl shift t        command    workbench action terminal sendSequence        args      text    node    file   u000D          Use your own keybinding    See Release notes  sendSequence and variables   With vscode v1 32 you can sendSequence to the terminal using variables like   file   which is the current file  If you want some other path there  replace   file  with your pathname in the keybinding above   The  u000D is a return so it will run immediately   I added  s around the   file  variable in case your file path has spaces in it  like c Users Some Directory fileToRun

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It s very simple  when you create a new file in VS Code and run it  if you already don t have a configuration file it creates one for you  the only thing you need to setup is the  program  value  and set it to the path of your main JS file  looks like this          version    0 1 0          List of configurations  Add new configurations or edit existing ones           ONLY  node  and  mono  are supported  change  type  to switch         ABSOLUTE paths are required for no folder workspaces       configurations                              Name of configuration  appears in the launch configuration drop down menu               name    Launch                  Type of configuration  Possible values   node    mono                type    node                  ABSOLUTE path to the program               program    C   test js     HERE YOU PLACE THE MAIN JS FILE                Automatically stop program after launch               stopOnEntry   false                 Command line arguments passed to the program               args                      ABSOLUTE path to the working directory of the program being debugged  Default is the directory of the program               cwd                      ABSOLUTE path to the runtime executable to be used  Default is the runtime executable on the PATH               runtimeExecutable   null                 Optional arguments passed to the runtime executable               runtimeArgs                      Environment variables passed to the program               env                       Use JavaScript source maps  if they exist                sourceMaps   false                 If JavaScript source maps are enabled  the generated code is expected in this directory               outDir   null                                    name    Attach                type    node                  TCP IP address  Default is  localhost                address    localhost                  Port to attach to               port   5858               sourceMaps   false

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The shortcut for the integrated terminal is ctrl      then type node  lt filename gt    Alternatively you can create a task  This is the only code in my tasks json        See https   go microsoft com fwlink  LinkId 733558    for the documentation about the tasks json format  version    0 1 0    command    node    isShellCommand   true   args       file      showOutput    always      From here create a shortcut  This is my keybindings json      Place your key bindings in this file to overwrite the defaults        key    cmd r    command    workbench action tasks runTask          key    cmd e    command    workbench action output toggleOutput        This will open  run  in the Command Pallete  but you still have to type or select with the mouse the task you want to run  in this case node  The second shortcut toggles the output panel  there s already a shortcut for it but these keys are next to each other and easier to work with

User · Answer

Follow these steps in VS code  performed in windows os    Create new file Write javascript codes in it Save file as filename js Go to Debugging menu Click on Start debugging or simply press F5   screenshot of starting debugging  screenshot of output of js code in terminal

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Well  to simply run the code and show the output on the console you can create a task and execute it  pretty much as  canerbalci mentions    The downside of this is that you will only get the output and thats it   What I really like to do is to be able to debug the code  lets say Im trying to solve a small algorithm or trying a new ES6 feature  and I run it and there is something fishy with it  I can debug it inside VSC   So  instead of creating a task for it  I modified the  vscode launch json file in this directory as follows      version    0 2 0    configurations                    name    Launch            type    node            request    launch            program      file             stopOnEntry   true           args                cwd      fileDirname             runtimeExecutable   null           runtimeArgs                  --nolazy                      env                  NODE ENV    development                      externalConsole   false           sourceMaps   false           outDir   null             What this does is that it will launch whichever file you are currently on  within the debugger of VSC  Its set to stop on start   To launch it  press F5 key  in the file you want to debug

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I am surprised this has not been mentioned yet   Simply open the  js file in question in VS Code  switch to the  Debug Console  tab  hit the debug button in the left nav bar  and click the run icon  play button    Requires nodejs to be installed

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This is the quickest way for you in my opinion     Open integrated terminal on visual studio code  View  gt  Integrated Terminal  type  node filename js  press enter   note  node setup required   if you have a homebrew just type  brew install node  on terminal   note 2  homebrew and node highly recommended if you don t have already   have a nice day

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Just install nodemon and run   nodemon your file js   on vs code terminal

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I would suggest you to use a simple and easy plugin called as Quokka which is very popular these days and helps you debug your code on the go  Quokka js  One biggest advantage in using this plugin is that you save a lot of time to go on web browser and evaluate your code  with help of this you can see everything happening in VS code  which saves a lot of time

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I used Node Exec  no config needed  builds the file that you are currently ending or what ever has been selected and outputs inside of VSCode   https   marketplace visualstudio com items itemName miramac vscode-exec-node  With a bit of config you can add Babel to do some on the fly transpiling too

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I faced this exact problem  when i first start to use VS Code with extension Code Runner   The things you need to do is set the node js path in User Settings   You need to set the Path as you Install it in your Windows Machine   For mine It was   C   Program Files  nodejs  node exe        As I have a Space in my File Directory Name   See this Image below  I failed to run the code at first cause i made a mistake in the Path Name    Hope this will help you    And ofcourse  Your Question helped me  as i was also come here to get a help to run JS in my VS CODE

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For windows  just change file association of  js file to node exe  1  Take VSCode 2  Right click on the file in left pane 3  Click  Reveal in explorer  from context menu 4  Right click on the file - gt  Select  Open with  - gt  Select  Choose another program  5  Check box  Always use this app to open  js file  6  Click  More apps  - gt   Look for another app in PC  7  Navigate to node js installation directory  Default C  Program Files nodejs node exe  8  Click  Open  and you can just see cmd flashing 9  Restart vscode and open the file - gt  Terminal Menu - gt   Run active file

[node.js] Run JavaScript in Visual Studio Code

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