How to resolve the algorithm Interactive programming (repl) step by step in the JavaScript programming language

Published on 12 May 2024 09:40 PM
#Javascript

How to resolve the algorithm Interactive programming (repl) step by step in the JavaScript programming language

Table of Contents

Problem Statement

Many language implementations come with an interactive mode. This is a command-line interpreter that reads lines from the user and evaluates these lines as statements or expressions. An interactive mode may also be known as a command mode,   a read-eval-print loop (REPL),   or a shell.

Show how to start this mode. Then, as a small example of its use, interactively create a function of two strings and a separator that returns the strings separated by two concatenated instances of the separator   (the 3rd argument).

should return

This task is   not   about creating your own interactive mode.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Interactive programming (repl) step by step in the JavaScript programming language

This is a JavaScript program that defines a function f and then calls it with three arguments.

  • The function keyword is used to define a function.
  • The function statement has three parameters: a, b, and s.
  • The return keyword is used to return a value from the function.
  • The + operator is used to concatenate strings.
  • The : character is used as the separator between the arguments.

When the function f is called, it returns the string "Rosetta::Code".

Source code in the javascript programming language

$ java -cp js.jar org.mozilla.javascript.tools.shell.Main
Rhino 1.7 release 2 2009 03 22
js> function f(a,b,s) {return a + s + s + b;}
js> f('Rosetta', 'Code', ':')
Rosetta::Code
js> quit()
$

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