In this quick tutorial, I will walk you through a few quite interesting techniques exporting, encapsulating a group of functions into a single unit. How it will improve your understanding of node scope and exporting technique to build industry standard node_modules.
Async & Await is introduced in ES6. It is very important to learn to make our effective and simple. It is a five minute tutorial with an example to make you aware of both. Quick and short explanation.
Lot of changes are happening in JavaScript. ES6 shifted standard of JavaScript language to one level up. const is one of the concept ,that is introduced as apart of ES6 standard. Those, who came from the C or Java , they have different meaning for this. const in JavaScript means “one-time assignment” . It doesn’t mean constant. It means you can assign the a variable or object once. But doesn’t mean immutable. The immutable concept require explanations. We will understand in below examples.
Let’s discuss some of the core concepts of Node.js. It is a very short post, but it is very important, if you want to play around with Node.js. It will give you a fair amount of idea how the activity is raised and handled by this fascinating coding language. Let’s jump into the topic. Any kind of activity or action taking place in the computer world are called an event. Some of the examples of the event are like the…
A lot of people get confused with the callback concepts. Here is the small topic to make you understand about the callback and uses Node world. It is very simple. Due to this feature, Node.js has captured the market so fast. Let’s discuss. In Synchronous programs, the code executes line by line. After finishing the execution of the current line, then moves to the next line. If any line contains a method which takes time to execute (it might be I/O…
This post is about getting familiar with the few of the Gulp operations and FTP deployment to a web server using it. As a developer, we have some challenges to manage the process of development and deployment to a different server. There are few of the techniques in Gulp, which can handle your hectic tasks pretty easily and make our life easy in the developments. When we try to develop the new application or update a legacy application, we need…
Sometimes we wonder about some code, we have just written, how it is performing. In JavaScript, we have a console object. This console object can provide you answer on performance. Console object has two methods named as time() and timeEnd(). These two methods take requires a string argument, which will name of the timer. It is generally used at the time of testing the code. Below is the syntax: For Example, We want to test a portion of a code…
Some point in time, while using social platforms we think how this chat window works. It is pretty simple. Here is sample demo application which will show how the chat window works in Node.js. We will be using the socket.io module for communication between chat windows. You can read about the ‘socket.io’ from https://socket.io/ . Node.js: It should be installed. Express js: As it is a web application we will require the express module. if you want to read…
Many of the situation we need to interact with the other programs. Here is a small demo on how to invoke or execute the jar. In Node js, the “child_process” is the module which will do the needful. Through chlid_process, we can execute OS command. Here have used one java program which takes input from the command line and prints the value which is in command line execution. Below is the java program we have used. We will create an…
Some cases we get requirements for bulk data insertion to MySQL database. It is a simple process. In this tutorial, we will learn about how to handle multiple rows or arrays of data insertion. Below are the steps to guide archive the target. Node Js: It should be installed in your system. Below are the processes to set up the project, 1. Create project folder(here it is “mysql-bulkinsert-opration”) 2. Navigate to the folder using the command line (cmd)