{"id":23361,"date":"2021-09-21T05:20:55","date_gmt":"2021-09-21T05:20:55","guid":{"rendered":"http:\/\/www.greytrix.com\/blogs\/sagex3\/?p=23361"},"modified":"2021-09-21T05:20:59","modified_gmt":"2021-09-21T05:20:59","slug":"how-to-write-encode-function-on-node-js-by-passing-input-argument-from-x3","status":"publish","type":"post","link":"https:\/\/www.greytrix.com\/blogs\/sagex3\/2021\/09\/21\/how-to-write-encode-function-on-node-js-by-passing-input-argument-from-x3\/","title":{"rendered":"How to write encode function on node.js by passing input argument from X3"},"content":{"rendered":"\n

Node.js files contain tasks that will be executed on certain events. Node.js uses an event-driven, non-blocking I\/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices. Node.js applications are written in JavaScript, and can be run within the Node.js runtime.Node.js files have extension “._js”<\/p>\n\n\n\n

STEP1: Creating Node.js File and save it as gumu.js<\/strong><\/p>\n\n\n\n

Writing Node.js code with build in modules and user defined modules and save it on Root Drive:\\Sage\\SyracuseComponent\\syracuse\\bin\\node_modules\\bundles\\ greytrix\\lib\\gumu.js<\/p>\n\n\n\n

Create the folder under bundles(greytrix\\lib)<\/p>\n\n\n\n\n\n

Fig 1.1-Code Description:<\/strong><\/p>\n\n\n\n

The “use strict” Directive:<\/strong><\/p>\n\n\n\n

“use strict”: Defines that JavaScript code should be executed in “strict mode”. It helps to write cleaner code, like preventing from using undeclared variables.<\/p>\n\n\n\n

Built-in Modules:<\/strong><\/p>\n\n\n\n

To make Node.js act as an HTTP server include the module. Include the module using require() function with the name of the module.<\/p>\n\n\n\n

Server:var http = require(‘http’);<\/em><\/strong><\/em><\/strong><\/p>\n\n\n\n

Application has access to the HTTP module, and is able to create a server.<\/p>\n\n\n\n

Node.js has a built-in module called HTTP, which allows Node.js to transfer data over the Hyper Text Transfer Protocol (HTTP).<\/p>\n\n\n\n

To identity the httpclient we can declare<\/p>\n\n\n\n

Client : var httpClient = require(‘syracuse-httpclient\/lib\/httpClient’);<\/em><\/strong><\/em><\/strong><\/p>\n\n\n\n

Create user defined Modules:<\/strong><\/p>\n\n\n\n

Use the exports keyword to make properties and methods available outside the module file.<\/p>\n\n\n\n

Example: exports.TOBASE64=function(_,InData){…..};<\/em><\/p>\n\n\n\n

STEP2:<\/strong> Passing argument from x3 client<\/strong><\/p>\n\n\n\n

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Fig 2.1: X3 script file<\/strong><\/figcaption><\/figure>\n\n\n\n

Fig 2.1-Code Description:<\/strong><\/p>\n\n\n\n

The function EXEC_JS is located in the ASYRWEBSER library and func ASYRWEBSER.EXEC_JS<\/em><\/strong> is used to execute node.js file and its definition is the following<\/p>\n\n\n\n

MODULE:<\/p>\n\n\n\n