Open in app
Home
Notifications
Lists
Stories

Write
Tanvir Shakil
Tanvir Shakil

Home

May 8, 2021

JavaScript Interview Questions and Answers for 2021

Javascript is a high-level server-side programming language. 1. What is Javascript? javascript is a client-side and server-side scripting language inserted into HTML pages and is understood by web browsers. JavaScript is also an Object-based Programming language 2. What are JavaScript Data Types? Number, String, Boolean, Object, Undefined 3. What is ‘this’ keyword in Javascript? “This” keyword refers to the object from where it was called

Java Script

2 min read


May 7, 2021

React.js Fundamental Concepts

The virtual DOM — DOM manipulation is the heart of the modern, interactive web unfortunately it also a lot slower than most Javascript operations. var commnetBox = React.createClass({ render: function(){ return ( <div className = "commentBox"> Hellow, world! I am a commentBox. </div> ); } }); JSX JSX allows us to write HTML elements in…

React

3 min read


May 7, 2021

Different ways to handle JavaScript errors

When executing javascript code, different errors can occur. Errors can be coding errors made by the programmer, error due to wrong input, and other unforeseeable things try and cath The try statement allows you to define a block of code to be tested for errors while it is being executed. The catch statement…

Java Script

2 min read


May 7, 2021

Do you know string & array prototype Javascript?

String.prototype.chartAt() The chartAt() returns a new string method of single code located specified offset the string chartAt(index) Example const word = "hellow new wordl"; console.log("The world at index is '+ word.chartAt() + '"); Run your terminal or console tab see your results String.prototype.replace() The replace() method returns a new string with some or…

Java Script

2 min read

Tanvir Shakil

Tanvir Shakil

React Frontend Developer

Help

Status

Writers

Blog

Careers

Privacy

Terms

About

Knowable