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To trigger a button on the Enter key in JavaScript, you can do it by using JavaScript keyboard events. Keyboard interactions are very essential in web development, and developers must use them effectively for a better user experience. This is especially helpful for forms, search boxes, and places where you enter information. In this article, we will explore different ways to detect and handle the ENTER key press event in JavaScript. To trigger a button on enter key in JavaScript, you can do it the following ways: Using keyup() event: ... Read More
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 More
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 More
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 More
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 More
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: ... Read More
To find the nth term of an arithmetic progression in JavaScript, we need to write a function that will calculate the nth term. In this article, we will explore how to find the nth term of an AP using JavaScript. We are required to write a JavaScript function that takes in three numbers as arguments (the first two numbers are supposed to be the starting two consecutive terms of an arithmetic progression). And the third number, say n, is the 1 index-based element of the series whose value we must calculate. If the input is 2, 5, 7 Then ... Read More
To check the value for percentage, use a regular expression. When dealing with user input or processing data in JavaScript, it's important to make sure a value is a valid percentage. This article shows you how to check if a value is a percentage using JavaScript, highlighting a useful method that involves regular expressions. Let's say the following is our value var value="97%"; To check the value for percentage, we are using a regular expression. Using Regular Expression The best way to check if a string is in the correct percentage format is by using regular expressions. ... Read More
In Python, you can dynamically call a function from a module by using its name as a string. This is useful in scenarios where function names are not known until runtime. Below are several methods to achieve this. Using getattr() Function Using globals() Function Using locals() Function Using importlib Module Using 'getattr()' Function The getattr() function is a built-in Python function that allows you to retrieve an attribute from an object using a string representing the attribute's name. This is particularly useful ... Read More
JavaScript is a lightweight, interpreted programming language. It is designed for creating network-centric applications. It is complementary to and integrated with Java. It is very easy to implement because it is integrated with HTML. It is open and cross-platform. Limitations We cannot treat JavaScript as a full-fledged programming language. It lacks the following important features: Client-side JavaScript does not allow the reading or writing of files. It has been kept for security reasons. JavaScript could not used for networking applications because there is no such support available. ... Read More