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In JavaScript, it is common to use a string as a key for an object, especially when you want to dynamically create or change the properties of the object. Objects are fundamental data structures that allow you to store collections of data in key-value pairs. You can use strings as keys directly. It is a simple and straightforward method. This article will guide you how to use a string as a key for an object. Setting a String as a Key for an Object You can set a strings as a key for an object using bracket notation. The ... Read More
Finding specific words in an array is a common task in JavaScript, especially when you need to filter data, search through lists, or analyze text. An array is a simple and fundamental data structure in JavaScript that stores multiple values of the same data type. JavaScript has several built-in methods, like includes(), filter(), and find(), that help you search for specific words easily. This article will explain these methods with examples. Finding Specific Words in an Array Finding specific words in an array can be done in the following ways: Using includes() method Using filter() method Using find() ... Read More
Automatically filling in a field in JavaScript is a common need in web forms, where one field copies the value from another. This feature eliminates the need to write the same information in one or more fields. This is useful in real-life scenarios, such as filling in the forms where the user has entered the permanent address and has to add a temporary address. If both the addresses are the same, using the autofilling feature, he can automatically copy the permanent address into the temporary address. This article explains how to create autofill features in JavaScript. Core Concept: Copying ... Read More
Adding and accessing object methods are common tasks in JavaScript. JavaScript objects are collections of properties and methods, and the JavaScript methods are functions associated with objects. JavaScript provides various features and ways to add and access object methods. In this article, we will understand how to add or access object methods in JavaScript. Understanding JavaScript Object Methods JavaScript methods are functions associated with objects. They allow objects to perform actions, which is important for creating dynamic and interactive programs. Methods in objects are functions that work with the object's properties. This helps make programming more organized and efficient. ... Read More
Gitlab offers various features and one of them is pipeline. Gitlab pipeline is used to perform continuous integration, continuous deployment ,code quality checks, security checks, artifact storage etc. The .gitlab-ci.yml file plays a vital role in the gitlab pipeline. All the pipeline configuration is written in the .gitlab-ci.yml file.CI/CD pipeline can run automatically when events are triggered like pushing to a branch , merging to a branch etc. Pipeline Components Jobs and Stages together form the pipeline. YAML keywords are used to define the stages and jobs. Jobs: Jobs run specific commands to achieve a single goal. For example a ... Read More
In this article, we will learn to achieve the same result as $(document).ready in JavaScript. In jQuery, $(document).ready() is a widely used function that ensures the DOM (Document Object Model) is fully loaded before executing JavaScript code. Different approaches The following are the approaches to achieve the same result as $(document).ready in JavaScript − Using document.readyState Using DOMContentLoaded Event Using document.readyState In jQuery, if you want an event to work on your page, you should call it inside the $(document).ready() function. Everything inside it will load as soon as the ... Read More
In this article, we will learn to create an array of objects in Java. An array of Object classes can be created that can accept any type of object. During the operation on such an array, instanceof operator can be used. Different Approaches The following are the two different approaches to creating an array of objects in Java − Using an Object[] Array Using a Class-Specific Object Array Using an Object[] Array Java provides a built-in Object class, which is the superclass of all classes. This means an array ... Read More
In this article, we will learn to check if a particular value exists in TreeMap in Java. A Java TreeMap is an ordered map that keeps key-value pairs in ascending order of keys. Although it is efficient to look up a key, checking for a value is inefficient since one has to iterate over the values. What is TreeMap? A TreeMap is a Red-Black tree-based implementation it is a part of java.util package and implements the NavigableMap interface. It maintains the natural ordering of keys or a custom order defined by a Comparator. Since it is sorted by keys, searching ... Read More
In this article, we will learn to create an Array in Java. Arrays provide an efficient way to manage and access data collections, making them essential for many programming tasks. What is an Array? A Java array is an ordered, fixed-size collection of elements of the same data type. Each element in an array is kept at a specific index, beginning with 0. Java arrays may store primitive data types (int, double, char) and objects (like String, Integer). Creating an Array In Java, you can create an array just like an object using the new keyword. The syntax of creating ... Read More
To dockerize an ExpressJS app, we will be going through a detailed stepwise explanation in this article. Containerization is becoming an essential in the software development process to ensure that the software is developed and deployed in different environments and in a consistent manner. Docker is the most popular containerization tool that helps in packaging an app and its dependencies. Problem Statement This article focuses on the challenges of deploying Node.js applications due to dependency conflicts, environmental issues, and system-specific settings. In the traditional way of deployment, the runtime environment has to be set up manually which resulted in ... Read More