JavaScript Tutorials - Herong's Tutorial Examples - 2.33, by Herong Yang
Running a JavaScript Code File with 'jrunscript'
This section provides a tutorial example on how to run a JavaScript code file with 'jrunscript' in batch mode.
Probably the best way to use "jrunscript" is to run it in batch mode, where is JavaScript code file is specified at the command line. "jrunscript" will process the entire code file in one shot.
In order to test "jrunscript" in batch mode, I revised one of my existing JavaScript Web page file into a pure JavaScript code file, For_Loop_Statements.js:
// For_Loop_Statements.js // Copyright (c) 2013 HerongYang.com. All Rights Reserved. var i, j, is_prime; for ( i=3; i<=30; i+=2 ) { is_prime = true; for ( j=2; j<=i/2; j++) { is_prime = i%j > 0; if (!is_prime) break; } if (is_prime) // document.write("Found a prime number: " + i + ".\n"); print("Found a prime number: " + i + ".\n"); }
Notice that, I have to change "document.write()" method to "print()" method, because "document" object is only available, if the script is executed in a Web browser. Here is how I ran this script file with "jrunscript":
C:\herong>\progra~1\java\jdk-10.0.1\bin\jrunscript \ -f For_Loop_Statements.js Found a prime number: 3. Found a prime number: 5. Found a prime number: 7. Found a prime number: 11. Found a prime number: 13. Found a prime number: 17. Found a prime number: 19. Found a prime number: 23. Found a prime number: 29.
Table of Contents
ECMAScript Language Specification and JavaScript Dialects
Data Types, Variables and Expressions
Creating, Accessing, and Manipulating Arrays
Defining and Calling Functions
Web Browser Supporting JavaScript
Server-Side and Client-Side Web Scripting
Defining Your Own Object Types
Inheritance of Properties and Methods through the Prototype Object Chain
►'jrunscript' - JavaScript Shell Command from JDK
Downloading and Installing JDK 10
"jrunscript" - Scripting Shell Command and Options
Running JavaScript Code with 'jrunscript'
Evaluating JavaScript Code with 'jrunscript' Interactively
►Running a JavaScript Code File with 'jrunscript'
Using Functions as "Function" Objects
Introduction to Built-in Object Types
W3C's Document Object Model (DOM) Specifications