15. When is it appropriate to use frames?

Frames can make navigating a site much easier. If the main links to the site are located in a frame that appears at the top or along the edge of the browser, the content for those links can be displayed in the remainder of the browser window.

16. Name two new tags included in the HTML 5

<Video> and <Audio> are new tags which are included in HTML5 version. They are mainly used as a replacement for Flash, Silverlight, and similar technologies to play multimedia items.

17. Do you know which are…

All the fundamental React.js

React is a JavaScript “library”. It is not exactly a “framework”. It is not a complete solution and you will often need to use more libraries with React to form any solution. React does not assume anything about the other parts in any solution.

Frameworks serve a great purpose, especially for young teams and startups. When working with a framework, many smart design decisions are already made for you, which gives you a clear path to focus on writing good application-level logic. However, frameworks come with some disadvantages. …

Javascript error handling:

Try a code with a blog to check the code.
Helps the programmer to handle the catch.
Throw lets create custom error shots.
Lets finally handle errors and tri-code results.

try {
adddlert(“Welcome guest!”);
catch(err) {
document.getElementById(“demo”).innerHTML = err.message;
finally {
Block of code to be executed regardless of the try / catch result

Technically you can throw an exception (throw an error).

The exception can be a JavaScript String, a Number, a Boolean or an Object:

Coding Style:

Coding are style guidelines for programming.
Naming and declaration rules for variables and functions.
Rules for…

JavaScript was once called the toy language, but after many updates, it is now being used to create much better quality applications. However, its name was previously published as LiveScript, Ekmascript, but now I know it as JavaScript.


An array is an object like a to-do list. The volume of JavaScript air depends on its components. Programmers can use it as they see fit. Cannot use string as index, but can use integers.

let items = [‘lap top’, ‘mobile phone’, ‘television’]

(1) array literal:

The syntax of creating an array using an array literal is given below:

Al-Amin Obhi

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store