Double negation converts a non-boolean to an inverted boolean value. This helps in checking the truthiness of a value, by representing it as a boolean value. If the value is a string type, and it is an empty string, false will be returned. If it has some value then true will be returned. If the value is a number type, and it is 0, false will be returned. If it has some number as a value then true will be returned.

Are you working with deep and complex objects in JavaScript? Then you are at the right place. Sometimes, we’ve to do multiple null checks in a complex object. In those cases, the if condition will grow huge like a Banyan tree like the one below In order to optimize this…

Hi, this article will help you in optimizing single if loop with different approaches. Scenario 1: Sometimes we’ve to execute huge code based on a flag as below. Here we’ve to execute the code only when the user is not null. …

In JavaScript, we can achieve the immutability of an array, by taking a copy of the original array with the Spread operator and performing the required operations on the copied array. For Example : We have a team of three members. Where Helen went on long leave. So, Noah joined the team temporarily replacing Helen. Then we can update the team members array as below

Here I’m sharing three ways to sort an array of strings in JS. Approach 1: We can directly use the inbuilt methods of array objects in JS. If we want to sort in ascending order we can simply use the Sort method and Reverse method for descending order. For example…

Sometimes we have to write complex else-if statements to verify multiple conditions. For e.g., I have a function that returns the discount price based on the coupon code provided by the user. Here have to verify each and every statement which takes a long time. Approach 1 : The first way to optimize this issue is by using a switch case. In which we don’t need to verify each and every statement. Instead based on the coupon code we can directly jump to the respective condition.

What is Unit Testing in Angular? Unit testing in Angular refers to the practice of testing individual components, services, pipes, and other units of an Angular application in isolation from the rest of the application. …

1. Open notepad and enter the below commands start C:\xampp\xampp-control.exe 2. Save as .bat file 3. Open your XAMPP application, click on ‘config’ button. 4. Check the check boxes of required servers.

If you are working projects, where you’ve copy paste couple of text multiple times, here is the hack. How to Save the copied text (Ctrl + C): 1. Click on Windows key in keyboard. 2. Search for Clipboard Settings or you can also find this under System > Clipboard in settings. 3. Toggle the `on` button of the Clipboard history.