In JavaScript, there are different ways to retrieve the index of an item in an array based on its value. In this blog, we will explore two methods for accomplishing this task. Method 1: Using indexOf for Primitive Values If the item you’re searching for is a primitive value (e.g., string or number), you can utilize the indexOf method of an array. Here’s an example: const letters = ['a', 'b', 'c']; const index = letters....
In JavaScript, a for-of loop is a powerful feature introduced in ES6 that allows you to iterate over an array effortlessly. However, by default, it does not provide a straightforward way to access the index of each iteration. But worry not! In this blog post, I will show you how to easily obtain the index of an iteration using a combination of the destructuring syntax and the entries() method. Let’s dive in!...
If you’re wondering how to get the last element of an array in JavaScript, let’s find out. Let’s say you have an array of colors like this: const colors = ['red', 'yellow', 'green', 'blue']; In this case, the array has 4 items. You already know that you can get the first item using colors[0], the second item using colors[1], and so on. But how do you get the last item without knowing the number of items in the array?...
When working with a JavaScript Date object instance, you may sometimes need to extract the name of the month. This can be done easily using the toLocaleString() method, which is part of JavaScript’s internationalization methods. To obtain the month name in your current locale, you can follow these steps: Create a Date object: const today = new Date(); Use the toLocaleString() method with the month option set to 'long': today.toLocaleString('default', { month: 'long' }); This will return the full month name based on your current locale....
When developing a user interface in the browser, it is often necessary to determine the current horizontal and vertical scrolling position of a scrollable element. So, how can you achieve this? To obtain the scroll position of an element in JavaScript, you can utilize the scrollLeft and scrollTop properties of the element. The scrollLeft property represents the horizontal scrolling position, while the scrollTop property represents the vertical scrolling position. The 0, 0 position is always located at the top left corner, so any scrolling is relative to that....
Are you wondering how to get tomorrow’s date using JavaScript? It’s actually quite simple! In this blog post, I’ll show you a quick and easy way to accomplish this task using JavaScript’s Date object. Recently, I had a situation where I needed to retrieve tomorrow’s date in my JavaScript code. After some experimentation with the Date object’s getDate() and setDate() methods, I found the solution. To get tomorrow’s date, follow these steps:...
Do you need to get yesterday’s date using JavaScript? In this blog post, we will guide you through the steps to achieve this. To get started, you need to obtain the current date and then subtract one day from it. Here is an example code snippet: const today = new Date(); const yesterday = new Date(today); yesterday.setDate(yesterday.getDate() - 1); console.log(today.toDateString()); console.log(yesterday.toDateString()); In the above code, we create a Date object today to represent the current date....
As developers, we all make mistakes. Whether it’s forgetting a semicolon, using the wrong variable name, or passing the incorrect argument to a function, errors are a part of the programming process. In PHP, we categorize errors into three types: warnings, notices, and errors. Warnings and Notices: These are minor errors that don’t stop the program execution. PHP will display a message indicating the issue, but the program will continue running unaffected....
In React, when an error occurs within a component, the entire React component tree is unmounted, resulting in a blank page being displayed to the user. This default behavior may not be desirable as it offers no helpful information to the users. In order to provide a better user experience, it is important to handle errors properly. Error Boundaries Error boundaries are a feature in React that allow you to catch and handle errors locally within specific parts of your application....
When using the popular Axios library in Node.js to make network requests, you may encounter a problem where the Node.js process crashes when the request fails. This can be unexpected and frustrating, but fortunately, there is a simple solution. The Issue: Crash on Failed Requests Let’s take a look at some code that uses Axios to make a POST request: axios({ method: 'post', url: 'https://...', data: JSON.stringify({ ... }) }); In this example, we are making a POST request to a specified URL....