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This tutorial will teach us to access the matched groups in JavaScript regular expression. The regular expression is the sequence of the character, also called the RegEx, and it is useful to match specific patterns in the string.There can be more than one match for the specific pattern in the string. To get the occurrence of all matches, we have explained the different methods below in this tutorial.We will also see the various usage of the regular expression in this article.Use the ‘g’ flag while creating the RegexWhen we add ‘g’ as the modifier in the regular expression, it searches ... Read More
This article will teach you how to create a JavaScript recursive function-a function that calls itself-using the recursion method. The process of recursion involves calling itself. Recursive functions are those that call themselves repeatedly. A condition to cease calling itself is always included in recursive functions. Otherwise, it will continue to call itself. Recursive functions are typically used to divide a large issue into smaller ones. Recursive functions are frequently found in data structures like binary trees, graphs, and algorithms like binary search and quick-sort.A recursive function is not immediately clear or simple to comprehend. You will read and comprehend ... Read More
In this article, we will learn how to work with a return statement in JavaScript. A specific value from the function is returned to the function caller using the return statement. Whenever the return statement is run, the function will stop. The code that follows the return statement won't be available, due to which it is the last statement in a function.Using the return statement, we may return object types, including functions, objects, arrays, and primitive values like Boolean, integer, and string.By using the return statement, we can also return many items. Immediate action is not viable. To return several ... Read More
In this example, we will learn how the prototype works in JavaScript. It is rare if a JavaScript developer doesn’t use the objects while developing the functions, and the objects can make a lot of work easy for developers.The prototype is also the advanced concept associated with the objects in JavaScript. Many of you have heard about the prototypes for the first time but don’t worry. We will cover all things about the prototypes in this tutorial.What does the prototype do?The prototype is the object created for every function class when the program starts execution. However, it depends on the ... Read More
In this article, we will learn how to print Unicode characters in the console using JavaScript. No matter the platform, the software, or the language, Unicode assigns a unique number to each character.Most writing systems' characters are defined by the universal character set known as Unicode, which also assigns each character a unique number (code point). A unit of data called an abstract character (or character) is used to organize, manage, or represent textual data.Most of the modern languages' letters, punctuation marks, diacritical markings, mathematical symbols, technical symbols, arrows, emoji, and other symbols are all included in Unicode.These are different ... Read More
In this tutorial, we will learn to display the image in the alert or confirm box in JavaScript. The alert() is the JavaScript method that displays the alert or confirms box on the top center of the screen when you invoke it.As a programmer and user, you have seen on many websites that they ask you for confirmation in the dialog box before you delete any precious thing in your user's account. Also, the alert box can be helpful to show some information when a user comes into the web page or a message.So, the default alert box can have only ... Read More
A namespace is a programming concept that gives identifiers (names of types, functions, variables, etc.) scope to avoid name conflicts. For instance, a program may need to use the same variable name in many contexts. In such a case, namespaces will separate these contexts so that the same identifier may be utilized in many namespaces.The initialization and application of namespaces in JavaScript will be covered in this tutorial. A namespace is not by default available in JavaScript. Constructing a global object that contains all functions and variables, the JavaScript Namespace feature may be repeated. Because numerous libraries and components are ... Read More
In this article, we will learn how to check the null values in JavaScript. The null value indicates the intentional absence of any object value. It is a JavaScript primitive value that is false when used in Boolean operations. This distinguishes null from the related primitive value undefined, which is an unintended absence of any object value. This is because a variable that has been declared but not given a value is undefined rather than null.You may visualize a variable as a box by using a real-world analogy. The box can hold things like a teapot, just like a variable ... Read More
In this tutorial, we will explore some of the most commonly used and famous HTTP clients that are present in Linux. A HTTP Client is a software that is mainly used to allow us to download files from the Internet. The primary reason for using HTTP clients is generally to download files, but these can also be used in case we want to debug or interact with a web server or multiple web servers.Now, let's consider the most famous HTTP Clients that are used.HTTPieWith the name that almost resembles of the famous web protocol (i.e., HTTP), HTTPie, is command line ... Read More
Most SQL databases are relational. Relational Databases are tabular and have a pre-determined schema that organizes the data logically. Database management solutions have evolved from the classic relational paradigm to the more flexible and scalable NoSQL approach.Some say NoSQL stands for "non-SQL, " but many refer to it as SQL. NoSQL is a non-relational database management system for certain data models. These data models don't need a schema and are scalable. It offers a system-supported alternative to relational databases' tabular format for storing and retrieving data. NoSQL databases don't require a certain schema. You can store data without worrying about ... Read More