JavaScript Indexed Collections

The first of data structures are collections that has index and items in the collection can be accessed through indexes. What do we understand Collections? Groups of data in different forms are one of the fundamental data structures in most programming languages. In many cases, groups of data expressed through different data types are referred … Read more

JavaScript Function Without Parameter and Without Return

In the previous post, we discussed about the JavaScript function and its components. The functions have different structures such as parameters or no parameters and some function return values and some do not in JavaScript. The simplest of function is the one without an parameters and without return. The function compute its statements and then … Read more

JavaScript Functions Overview

The functions are building blocks of the JavaScript programming. A function in JavaScript is a block of statements that may or may not take inputs and return a value. Therefore, it appears that JavaScript functions are no different from functions in other programming languages. There are many difference between functions in other languages and JavaScript … Read more

JavaScript Logical Operator

Logical operator is one that compare two boolean operands and gives a boolean output. They are of high importance in computer science, especially in digital design and computer architectures. They operands of logical operator could be constants, variables of all types and expressions involving comparison operators. First, we must understand the working of these logical … Read more

JavaScript Ternary Operator

JavaScript language supports a C style ternary operator, also called a conditional operator. Any variable can be assigned value based on boolean value of an expression. Syntax The new variable will get its value based on certain conditions, suppose the condition is true, then the value 1 will be assigned, otherwise value 2 will be … Read more

JavaScript Comparison Operator

The JavaScript comparison operator takes two operands and then compare it. The result of the comparison is a boolean value. The operands could be a number a string a boolean value or an object Usage and Syntax You can use comparison operator anywhere within the script, however, these are more popular in conditional blocks such … Read more

JavaScript typeof operator

In JavaScript, the typeof operator can check primitive types which you learned in the previous post. Let’s find out the data types of primitive types using the typeof operator. The typeof operator shows the current data type of the variable when executed. How to use <mark style="background-color:rgba(0, 0, 0, 0);color:#b20f0f" class="has-inline-color">typeof</mark> operator? There are two … Read more

JavaScript Data Types

JavaScript is a loosely typed and dynamic language. Variable can be assigned or reassigned anytime. In JavaScript, there is no need to declare the type of variable like C/C++, Java,etc.You can assign a value directly. JavaScript also allows values called primitive types. These are well known types in all programming langauges. Primitive Types are: <mark … Read more

Groups And Range Of Characters

In regular expression, sometimes we need to match a group of characters or a range of characters. These kind of expressions are written within a bracket notation. In this post, we will explore these kind of expressions with examples. List of Range Expressions The following table demonstrate the grouped expressions and their meaning. Expression Meaning … Read more

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