Ridoy Karmakar

May 8, 2021

JavaScript

If else example: Const age = 20; If(age){ Console.log(“this value is true”); } else{ Console.log(“this value is false”); } If the value is 0, “” , undefined, null, NaN, false. This is value is false. Null vs undefined The undefined value is not set. If the variable doesn't declare. value is undefined. An undefined value is set. For example: Const name: null; Double equal (==) or triple equal (===)

1 min read

1 min read

May 7, 2021

React

React is defined as a JavaScript library for building user interfaces. Let’s start by talking about the two different parts of this definition. 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…

2 min read

May 6, 2021

JavaScript

JavaScript has many built-in standard errors: Error, SyntaxError ReferenceError, ReferenceError, TypeError and others. We can use them to create error objects as well. In our case, try…catch is placed to catch “incorrect data” errors. But by its nature, the catch gets all errors from try. Here it gets an unexpected…

2 min read

May 5, 2021

JavaScript

JavaScript is a dynamic language. Everything is standard. JavaScript types are Number String Boolean Function Object Concat string creates a new string but doesn’t affect another side. includes() includes string is checking to return true or false. endsWith() ends With() checking the last case true or false. indexOf() checking to index value…

1 min read