var changeable and it shares value with the parent scope. let is also changeable but it is not…
Hello developer, I am Shakil Ahmed today I will shortly discuss the fundamental concept of React 🤩 so stay with me and read properly A to Z learn once, write anywhere 👨💻.
React is not a framework it is a library. So React is a library for building a user interface. With react we get to be declarative for HTML UIs that represent dynamic data, not static data. When react released it comes with a new idea of virtual DOM.
The Document Object Model (DOM) is an application programming interface (API) for HTML and XML documents. Below the DOM Structure
Hello JS developer today we are talking about some theoretical topics and ES6. So read this article properly It can help you
Type Of: We use many types of value in this programming language. so we have to clearly understand which type of value we use and of which context.
we can find type using at typeof() keyword. we are found 2 categories and a total of 9 types of value
1.Primitive value: 1.Undefined 2. Null 3. Booleans 4.Numbers 5.Strings 6.Symbols 7. BigInts
2.Object & Function: 8.Objects 9. Function And array, data, regular expression fundamental object in JS.
console.log([‘shakil’, ‘fariha’, ‘jannat’].indexOf(‘jannat’) >= 0); //true
2. replace(): replace a word in a sentence with some or all matches of a sentence
let result = “1 abc 2 abc 3”.replaceAll(“abc”, “xyz”);
// return “1 xyz 2 xyz 3”
3. subStr(): it returns portion string in a string it has 2 parameter 1st started index num 2nd where…
Hello, I am Shakil Ahmed Front End Developer & I am also working as a MERN developer I Love ❤️ JS.