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Articles by Disha Verma
Page 4 of 5
JavaScript RegExp return values between various square brackets? How to get value brackets?
Extracting values between various square brackets can be done using JavaScript regular expressions. The regular expressions in JavaScript are useful for extracting values enclosed within different types of brackets, such as square brackets ([ ]), curly brackets ({ }), and parentheses "( )". In this article, we'll look at how to use JavaScript's RegExp to find and get content that is inside square brackets easily. Understanding JavaScript RegExp Regular expressions (RegExp) are patterns used to match and manipulate strings in JavaScript. JavaScript RegExp helps you find and get text that is inside specific brackets by using patterns. The ...
Read MoreJavaScript: How to check if a number is NaN or finite?
Checking whether a number is NaN (Not a Number) or finite is important while working with numerical computations in JavaScript. NaN (Not a Number) indicates a value that can't be represented as a number, often occurring from invalid operations like dividing zero by zero (0/0). Finite numbers are all real numbers in JavaScript that are neither Infinity, -Infinity, nor NaN. JavaScript provides several built-in methods to determine if a value is NaN (Not a Number) or if a number is finite. In this article, you will understand how to check if a number is NaN or finite using these built-in ...
Read MoreCall a function with onclick() – JavaScript?
The onclick event is a useful feature for calling a function in JavaScript. The onclick event allows you to execute a function when a user interacts with an element, such as clicking a button. This article will guide you on how to use the onclick event to call a JavaScript function. What is Onclick Event? The onclick event is triggered when a user clicks on an HTML element. It is commonly used to execute a JavaScript function or a block of code in response to a mouse click on an HTML element, such as a button, link, or any ...
Read MoreJavaScript: replacing object keys with an array
Replacing object keys with an array is a common task every developer does while working with data transformations. An object is a data structure that stores data in the form of key-value pairs, and an array stores values of the same data type in a linear form. Sometimes, developers need to use object keys with an array. This article explains how to efficiently replace object keys using arrays in JavaScript. We are required to write a JavaScript function that takes in an object and an array of literals. The length of the array and the number of keys in the ...
Read MoreJavaScript: Computing the average of an array after mapping each element to a value
Computing the average of an array after mapping each element to a value in JavaScript can be done by using the forEach() loop, the parseInt() method, the reduce() method, and the for..of loop. In this article, we are going to fetch all the values from an array and after mapping each element to a numerical value we will calculate its sum thus to compute its average. Given below is an array consisting of values. We will compute the average by summing up the values and then dividing it by the number of values available. Suppose Input is: [1, 2, ...
Read MoreJavaScript to push value in empty index in array
To push value in an empty index in an array, we must write an array function pushAtEmpty() that takes in an element and pushes it at the first empty index it finds in the array it is used in the context of. If there are no empty spaces, the element should be pushed to the end of the array. The arrays are data structures in JavaScript that are used to store values of the same type in a linear form. Arrays are basic data structures that every developer works on. While working with arrays, they commonly work on pushing elements ...
Read MoreJavaScript Sum of two objects with same properties
Obtaining the sum of two objects in JavaScript having the same properties Obtaining the sum of two objects in JavaScript having the same properties is a basic implementation with JavaScript objects. To do this, we are required to write a JavaScript function that takes in two such objects. The function should sum the values of identical properties into a single property. In JavaScript, objects are data structures that allow you to store collections of key-value pairs. Sometimes, you might need to sum the values of two objects that have the same properties. This article will guide you on how to ...
Read MoreJavaScript input type=submit is not working?
The input type submit is not working; it is one of the common issues that every developer faces while working with JavaScript forms. To make it work, you can use an onclick event listener with input type = "submit" or prevent its default behaviour. This article looks at common reasons why a submit button might not work in JavaScript and offers solutions to resolve this issue. Common Reasons for Submit Button Issues The following are listed are some common reasons that may lead to this issue: Missing Event Listener − If you have not ...
Read MoreJavaScript: How to map array values without using \\\"map\\\" method?
Mapping array values without using the map method can be done by using forEach() method, reduce() method, for loop, and while loop. In this article, we will implement some methods that will work efficiently for mapping array values. Table of Content Mapping array values without using map method can be done in the following ways: Using forEach() Using reduce() Using a for Loop Using while Loop Using forEach() The forEach() method allows you to iterate through each element in ...
Read MoreJavaScript: How to filter out Non-Unique Values from an Array?
To filter out non-unique values from an array in JavaScript, you can use the filter() method, a for loop, the set and filter() method, and the reduce() method. In this article, we will filter out non-unique values and return an array that only contains unique non-repeating elements. Arrays are data structures used to store data in a structured format. We can store the data in an array and retrieve them using their indexes. These indexes serve as a key for these values. Table of Content Filtering non-unique values from an array can be done in the following ways: ...
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