Category Archives: Tutorial

HTML Web Storage API

Web Storage In HTML5 W3C (World Wide Web Consortium) introduced the concept of web-storage. Web Storages allow the developer to store the user data within the user’s browser. Web-browsers introduced as an alternative for cookies storages that required server request. Web storage provides more security and data space for the user confidential data and does not affect website… Read More »

HTML Web Workers API

HTML Web Worker API is a JavaScript code that runs in the background and does not affect the page performance. Web Workers When the <script> or JavaScript code executes then only the page become responsive. A web worker runs in the background independent of the other script without affecting the page performance. Web workers make the page more… Read More »


HTML SSE(Server-Sent Event) API allows updating the front end content from a server without refreshing or re-requesting the page. Server-Sent Event(SSE): One Way Messaging The Server-Sent Event automatically updates the web page from the server. In the background, the web-page continuously asks the server for the update. It is also known as one way messaging because the client… Read More »

HTML Elements

The HTML elements provide the semantic meaning to the web-page content. We usually interchangeably use the term HTML elements and tags, but technically both are different. An HTML tag is just a character inside the angle bracket<>, whereas the HTML element is a collection of starting tag, its attribute, content and end tag. For example: <p class= “para”>… Read More »

HTML Editor

The first tool you need to learn HTML is a text editor, on which you can write the HTML code and create HTML documents or files. Every operating system comes with an inbuilt text editor software, in windows we have the notepad, and in Mac and Linux based operating systems we have TextEdit. <Note> Never use WordPad or… Read More »

HTML Tutorial

HTML is an acronym for HyperText Markup Language, and it is the standard language for creating web-pages. Every web page you surf on your browser is built using HTML. The primary use of HTML to provide a proper structure to the web-page so all the content or data of the page could represent adequately.  A stand-alone HTML can… Read More »

HTML Input Attribute

<input> element has many attributes, and each one has a specific meaning. Here we have covered all the major attributes we use in <input> element. Some of the attributes are optional, and some are mandatory to mention. <input> Attributes Type <input type=””> the type attribute defines the input type for the input block. By default, the type value… Read More »

SQL Transaction

If there is a group of SQL commands performed on a database to manipulate the stored data, then all those commands can be treated as a single unit called a transaction. In simple word, we can say that a transaction is a group of SQL queries, and transaction handles all those queries as a single unit. SQL Transaction… Read More »

SQL Injection

Most of the web-applications use SQL database to manage and organize the data of its users and content. Now, most of the websites are dynamic; they all use some kind of SQL relational database management system to fetch and store data. There are many active threats a website can face, and SQL injection is one of those threats.… Read More »


In SQL a Sequence is defined as a Database object which is generally used to generate an integer sequence. In Database tables, Sequences often used to populate the numeric primary key column. However, this can also be done using the AUTO_INCREMENT constraint, but Sequences give more flexibility, and here we can define the integer sequence in a different… Read More »