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Sandeep Mandal | Page 4

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Author: Sandeep Mandal

Sandeep Mandal August 31, 2024 No Comments

How to define Schema and create Model with it in Mongoose?

Example: const mongoose = require('mongoose'); mongoose.connect("mongodb://localhost:27017/magesDB"); const userSchema = new mongoose.Schema( { name: { type: String, require: [ true, "Please enter your name" ], },…
Sandeep Mandal August 24, 2024 No Comments

How to use JavaScript’s Array reduce() method?

The reduce() method in JavaScript executes a reducer function for each array element, returning a single accumulated value. When to use the reduce() method We…
Sandeep Mandal August 17, 2024 No Comments

How to handle multiple Promises in JavaScript?

We can handle multiple Promises in several ways one of them is by using Promise.all() method. In this post I am going to demonstrate how…
Sandeep Mandal August 10, 2024 No Comments

How to filter a query in cfscript?

Syntax: users = queryNew( "id,userType,name", "integer,varchar,varchar" ); queryAddRow(users, [{ id: 1, userType: "user", name: "John" },{ id: 2, userType: "admin", name: "Sam" },{ id: 3,…
Sandeep Mandal August 3, 2024 No Comments

How to use useState Hook in React?

Syntax: import { useState } from "react"; import ReactDOM from "react-dom/client"; function SignIn(){ const [ userName, setUserName ] = useState(""); return ( <> <h1>SignIn</h1> <input…
Sandeep Mandal July 27, 2024 No Comments

Facing difficulties understanding what is TypeScript and how to create custom types in TypeScript? Then you are on the right page.

TypeScript is a strongly typed programming language that builds on JavaScript. It offers optional static type-checking. Why TypeScript is Introduced? JavaScript is a dynamically typed…
Sandeep Mandal July 20, 2024 No Comments

Wondering how to loop through an object in javascript? Here is the solution.

There are multiple ways to iterate an object in javascript. But I personally recommend the following solution. Syntax: Object.entries( myObject ).forEach( ( entry ) => { let key = entry[ 0 ]; let value = entry[ 1 ]; console.log( key, value );…

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