Can the value of a constant variable be changed after it is assigned a value?
In the field of web development, specifically in JavaScript programming, the value of a constant variable cannot be changed after it has been assigned a value. A constant variable, as the name suggests, is a variable whose value remains constant throughout the execution of a program. Once a value is assigned to a constant variable,
- Published in Web Development, EITC/WD/JSF JavaScript Fundamentals, Basic programming in JavaScript, Number and string data types, Examination review
What is string concatenation and how is it used in JavaScript?
String concatenation is a fundamental concept in JavaScript that involves combining multiple strings into a single string. It is a process of joining two or more strings together, end-to-end, to create a new string. In JavaScript, strings are a sequence of characters enclosed within single quotes ('') or double quotes (""). To perform string concatenation
- Published in Web Development, EITC/WD/JSF JavaScript Fundamentals, Basic programming in JavaScript, Number and string data types, Examination review
How can you declare a constant variable in JavaScript?
To declare a constant variable in JavaScript, you can use the `const` keyword. The `const` keyword is used to define a variable that cannot be reassigned or redeclared once it has been initialized. This means that the value of a constant variable remains the same throughout the program. To declare a constant variable, you need
How are numbers and strings different in JavaScript?
Numbers and strings are two fundamental data types in JavaScript. While both numbers and strings represent values, they differ in their characteristics and usage within the language. Firstly, numbers in JavaScript are used to represent mathematical values, such as integers and floating-point numbers. They can be positive, negative, or zero. JavaScript provides various operations and
What are the two basic data types in JavaScript?
In the field of Web Development, specifically in JavaScript fundamentals, it is important to understand the basic data types that are commonly used in programming. JavaScript, being a dynamically typed language, supports several data types, but the two fundamental data types are numbers and strings. 1. Number Data Type: The number data type in JavaScript