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The server-sent events allow developers to open a connection between the server and the client and send data from the server to the client. Basically, it is a one-way communication, which means we can send data from the server to the client but not from the client to the server. Here, we will discuss all events available for the server-sent events in JavaScript. Events Available for Server-sent Events in JavaScript There is a total of 4 different events available for server-sent events in JavaScript. ‘onopen’ − The ‘open’ event fires when the connection between the client and server is ... Read More
Nowadays, the audiobook is more preferred by readers to reading books as they can grab knowledge while doing any work by listening to it. Also, some website adds the audio of the article in every article, so if users don’t want to read the article, they can listne to it. To convert normal text to voice, we require to use the web speech api of Google Chrome. In this tutorial, we will learn to use the web speech API of Google Chrome to convert text to voice. Syntax Users can follow the syntax below to use the web speech API ... Read More
Problem Statement − We have given two integer numbers and need to check whether the two numbers are bit rotations of each other. In JavaScript, every integer is a 32-bit binary number which is a representation of 0 and 1. Here, we need to check if we rotate the 32-bit string of the first number; we can achieve the 32-bit string of the second number or not out of a total of 32 rotations of the first number. Use the ToString() Method to Check if two Numbers are bit Rotations of Each Other The toString() method is used to convert ... Read More
A tree is a data structure which consists of nodes. The nodes are connected by the edges. The top most node is called as the root and the bottom most nodes are called as the leaves. Leaves are the nodes that do not have any children. Binary Tree A binary tree is a tree in which every node can consist a maximum of 2 children. That means, every node can either have 0 or 1 or 2 children but not more than that. Every node in a binary tree consists of three fields − Data Pointer to the left ... Read More
The Yup is an NPM package we can install in the react-native application. It is used to validate the form values stored in a single object. Also, we can add different kinds of validations to the different form fields using the Yup. Users can execute the below command in the project directory to install the Yup in react native. npm i Yup Users can use the below command if they are using the Yarn. yarn i Yup Syntax Users can follow the syntax below to use the Yup for the form validation in the react-native application. const schema ... Read More
The server-sent event is a unidirectional way to communicate between the server and the client. When we only require to send data from server to client, but not from client to server, we can use the server-sent events. We can use the server-sent events by establishing the connection between the client and server. Here, the server sends the data, and the client receives the data and handles the data to show on the web page. The server can be anything, such as Node, PHP, or Ruby applications. So, when the server sends the data, the ‘message’ event fires on the ... Read More
Converting a list into a string One method for converting a list into a string is to iterate through all the items of a list and concatenate them into an empty string. Example lis=["I", "want", "cheese", "cake"] str="" for i in lis: str=str+i str=str+" " print(str) Output I want cheese cake Using Join Function Join is an in-built function in python which is used for joining the items of an iterable object (ex: list) using a separator which will be specified by the user. We can use the join ... Read More
Sometimes, developers require to add the fixed options in the search box while creating the search bar. For example, you are developing a web application containing different web pages related to cars, bikes, other vehicles, etc. Also, you require to add a search bar on every web page. So, you may be required to add the fix tags like car, bike, or some car or bike brands as fixed tag in the search bar to highlight. In this tutorial, we will learn to add fixed options in search box in ReactJS using the AutoComplete component of the Material UI library. ... Read More
Firebase is a backend-as-a-service (BAAS) that provides different services. It includes authentication, cloud storage, hoisting, etc., in the services. Basically, it makes it easy for developers to integrate the authentication, database, etc., in the mobile or web application. In this tutorial, we will explore the cloud storage of Firebase. We will learn to upload images in the Firebase cloud storage and get the URL of the image, which we can use anywhere. Users should follow the steps below to set up the Firebase account and integrate it with a single-page web application. Step 1 − First, Go to the ... Read More
In python, collections are the containers used for storing the data. The built-in data structures in python are tuples, lists, sets and dictionaries. The collections class will provide additional data structures apart from the built-in data structures. Some of the data structures in the ‘collections’ module − Counter namedTuple orderedDict defaultDict Deque chainMap Counter It is the type of collection in which the elements will be stored as dictionary keys and the counts will be stored as dictionary values. Whenever you want to calculate the frequency of any item in a list, traditionally you would use a ... Read More