How do I get console input in javascript

Question

I m currently using spidermonkey to run my JavaScript code  I m wondering if there s a function to get input from the console similar to how Python does this   var   raw input       Or in C     std  cin  gt  gt  var    I ve looked around and all I ve found so far is how to get input from the browser using the prompt   and confirm   functions

User · Accepted Answer

Good old readline     See MDN  archive

User · Answer

In plain JavaScript  simply use response   readline   after printing a prompt   In Node js  you ll need to use the readline module  const readline   require  readline

User · Answer

You can try something like process argv  that is if you are using node js to run the program  console log process argv    gt  Would print an array containing                                                                                                                                                                                                 usr bin node                                                                                                                                                                                home user path filename js                                                                                                                                                  your input                                                                                                                                                                                        You get the user provided input via array index  i e   console log process argv 3   This should provide you with the input which you can store  Example  var somevariable   process argv 3      input one var somevariable2   process argv 4      input two  console log somevariable   console log somevariable2    If you are building a command-line program then the npm package yargs would be really helpful

User · Answer

As you mentioned  prompt works for browsers all the way back to IE   var answer   prompt  question    defaultAnswer        For Node js   v7 6  you can use console-read-write  which is a wrapper around the low-level readline module   const io   require  console-read-write     async function main          Simple readline scenario   io write  I will echo whatever you write       io write await io read           Simple question scenario   io write  hello   await io ask  Who are you               Since you are not blocking the IO  you can go wild with while loops    let saidHi   false    while   saidHi        io write  Say hi or I will repeat           saidHi   await io read        hi          io write  Thanks  Now you may leave        main       I will echo whatever you write      gt  ok    ok    Who are you  someone    hello someone     Say hi or I will repeat        gt  no    Say hi or I will repeat        gt  ok    Say hi or I will repeat        gt  hi    Thanks  Now you may leave    Disclosure I m author and maintainer of console-read-write  For SpiderMonkey  simple readline as suggested by  MooGoo and  Zaz

[javascript] How do I get console input in javascript?

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