Node JS Projects with source code

What is Node JS?

Node JS is defined to be a back-end Javascript runtime environment that is open-source and cross-platform. It runs on the V8 engine and outside a web browser, it executes the Javascript code. This platform was designed to build scalable network applications or Node JS Projects. However, the Node JS platform allows the developers to use Javascript in writing command-line tools and for writing the server-side scripts. The server-side scripting is meant for running or executing the scripts on the server-side to produce the dynamic web page content before the page is sent to the web browser of the user.

Benefits of Node JS

Node JS is an open-source platform that has several benefits for the users which are as discussed below:

It is relatively quite easy to grasp the coding pattern in Node JS as it has no steep learning curve.
While working with Node JS, the users can share one language both on the client and server sides in a simple way, and thus it is not needed to switch between front-end and back-end.
The Node JS platform is specifically helpful in approaching the time-to-market cycle shorter.
Node JS is highly scalable and can handle many concurrent connections.

Popularity and Usage of Node JS

Node JS has gained popularity because of its simple execution nature. It offered great scalability and the chance of parallel code execution. With the introduction of its new logic along with the approach for the Java script server-side development, it has become more popular among developers. Node JS has introduced the utilization of the single-threaded event loop model.

Node JS is widely used for the collection of data, in real-time applications, chat rooms, web streaming options, data processing, browser games, etc. Node JS is also utilized in high-speed applications, and even in the databases that are widely expandable and scalable eventually. For an instance, the Node JS is used in developing different applications like:

Node JS Projects

News Website Project

The news website developed on the Node JS platform featured in the display of distinct news from various news sources dynamically with the help of the programming languages used like HTML, CSS, EJS, and Java Script. The application of news websites focuses on the current and updated news with the exact date and time of its last update. This web application offered the readers the news of different sectors and also provided them the option of searching for specific news.

Weather App Node Js

The weather application is developed in the Node JS projects platform with the basic feature of displaying the current and prevailing temperature of a particular region as specified. This app is developed using the programming language HTML, CSS, and Javascript in Visual Studio Code. The app has the provision for providing updated weather reports to the users that include the minimum and maximum temperature along with the humidity of the region, measurement of precipitation, etc. It displays the weather status on a weekly, monthly, daily, and hourly basis.

Online Shopping website

The shopping website is also developed in the Node JS platform/Node JS Projects with the feature of online purchasing of different products like T-shirts, shirts, etc. The shopping website provides the feature of adding the purchase selections to the cart after successful login into the website as a customer. Before checking out to buy all the selected products, the user has the option of reviewing all the selected products on the shopping cart page of the website.

Conclusion

Node JS is considered to be a highly compatible and open-source platform that enables developers to build a dynamic website/Node JS Projects and web application in a user-friendly, easy, and pocket- friendly mode. It even shortens the time in launching a developed product in the market.

Convert JavaScript Array to JSON

JSON

JavaScript object notation is very flexible and easy to read format for data interchange. It is very light weight and easy to parse for machines. You can use JSON with java script and other programming languages for data exchange from one end to another one. It is widely used in rest services.

In JavaScript we can use JSON.stringify to convert an java script array into a JSON formatted string. Below is the code for converting JavaScript Array to JSON and displaying it in alert box.

Source Code

Type 1 – JSON serializes Array

var temp= Array()
temp[0] = "apple";
temp[1] = "boy";
temp[2] = "cat";
temp[3] = "gun";

alert( JSON.stringify(temp) );
console.log( JSON.stringify(temp) );

Output

["apple","boy","cat","gun"]

Type 2 – JSON serializes Object

Here we are creating a array in java script and filling it with random string values. Then we are using JSON.stringify function which is in build function to convert it to JSON format.

var temp= {}
temp[0] = "apple";
temp[1] = "boy";
temp[2] = "cat";
temp[3] = "gun";

alert( JSON.stringify(temp) );
console.log( JSON.stringify(temp) );

Output

{"0":"apple","1":"boy","2":"cat","3":"gun"}

Usage of this Function

We can use this functionality for converting java script array data to JSON format for using in AJAX web service calls right from your browser.

var temp= Array()
temp[0] = "apple";
temp[1] = "boy";
temp[2] = "cat";
temp[3] = "gun";

var xmlhttp = new XMLHttpRequest(); 
xmlhttp.open("POST", "/json-handler");
xmlhttp.setRequestHeader("Content-Type", "application/json");
xmlhttp.send(JSON.stringify(temp));

Reference

https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify