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  • The rounding of numbers is an essential part of programming languages. Rounding refers to the process in which a number is made simpler, but its value is kept close to the initial value. It aids in estimating and utilizing a number according to the user’s needs. Users can, therefore, round numbers to 2 decimal places by using different methods in JavaScript.

  • When developing web applications, it is necessary to include the current date and time on which a particular operation was performed according to the user’s local zone. This requirement can be filled out using the date class. For instance, when you submit data via a form, you may want to include the date that the data was created or when the data was submitted.

  • An array is a unique variable capable of holding more than one value. It is one of the most common datatypes used when working with an ordered list of values. It can hold many values under a single name, which can be accessed by referring to an index number.

  • When programming in JavaScript, you will encounter various situations where you must compare two strings before performing an operation. For instance, a user can only log in to a website if its name matches the existing names stored in the database. In such situations, the ‘Strict Equality Operator’ compares the strings. The functionality of comparison in JavaScript is not only limited to value-based comparisons. Strings are compared for various reasons. Some of the reasons include the following:

  • We will explore a ternary operator in Javascript in this tutorial and see how helpful it is for clear code. Every developer or programmer aspires to write clean code since it is a good practice. To shorten the code, use the ternary operator (?:) in JavaScript.

  • A character pattern is what makes up a regular expression. The text uses the pattern to do “search-and-replace” operations that match patterns. Further, a RegExp Object in JavaScript is a pattern with properties and methods.

  • The array’s chosen elements are returned as a new array by the slice() method. The slice() method also chooses between a specified start and a specified (not inclusive) end. However, the original array is unaltered by the slice() technique.

  • A heatmap is used to create a visual depiction of a matrix. It draws a matrix on the graph, with different color hues representing different values. We can utilize the seaborn to generate heatmap plots in the seaborn module.heatmap() function. The default size of the plot may not provide a good picture of the data when depicting a huge matrix.

  • When provided with an array, the forEach() function is responsible for calling a function for every item in the given array. However, it is worth noting that this method does not execute when no elements exist.

  • Arrays are essential for completing programming tasks in any programming language. In fact, arrays refer to list objects with methods for performing mutation operations. The length of a JavaScript array and the types of its items are not fixed. Arrays in JavaScript are used to hold several values in a single variable.

  • In this article, we shall take a look at generating random numbers in JavaScript with practical examples. First, we will explore the definition of Math.random() and use examples to elaborate its applications on our usual daily tasks.

  • JavaScript

    Strings in JavaScript

    by Lucy

    A sequence of characters is represented and manipulated using the String object. You can use Strings to store data that can be represented as text. Checking the length of a string, building and concatenating it with the plus and += string operators, checking for substrings’ existence or location with the indexOf() method, and extracting substrings with the substring() method are some of the most common operations on strings.