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We have given the array of elements and need to use the map() on the array in reverse order with JavaScript. The map() method maps the new element related to a particular array element in the resultant array. Sometimes, we require to map the elements in reverse order. There can be many ways to use map() on an array in reverse order. We will see all approaches one by one. Introduction to map() method Syntax Follow the syntax below to use the map() method. array.map((ele, ind, array) => { return ele + 20; }) ... Read More
The filter() method is used to filter values from the array, and the map() method is used to map a new value to another array based on every value of the old array. Sometimes, we require to use the filter() and map() methods together. For example, we wanted to filter all positive numbers from the array and map their logarithmic value to the new array Let’s look at the introduction of the filter() and map() methods before we start with this tutorial. In this tutorial, we will learn to use the map and filter methods simultaneously on an array ... Read More
While working with the HTML checkboxes, sometimes developers may require to use the checkboxes to allow users to select multiple options. Also, developers need to perform some actions based on the selected checkbox. For example, you have given the checkbox with a question like are you above 18? If users check this checkbox, only show the input to take a user’s pan card number. So, we need to call a function whenever the user checks and unchecks the checkboxes. Use the onchange event The onchange event attribute allows us to invoke a function whenever the user checks and ... Read More
Since businesses turn online, the demand for internet marketers is at its peak. The doorway to becoming a competent internet marketer in digital marketing is challenging yet progressive if you be focused from day one. You need to develop a few skill sets and implement them in the core sector of online marketing. If you are still trying to decide what to learn, what skills are necessary, and many other measures you must consider, read the article and understand the process. Digital marketing is emerging, and the impact is high on the global market. However, Internet marketers add value ... Read More
Nowadays, JavaScript is useful for writing frontend and backend code. Also, it is the most widely used programming language. Furthermore, we need to get the data from other servers while developing real-time applications. We can fetch data from other servers or databases using the API, which stands for the application programming interface. Here, we will learn various methods to fetch API to get data using JavaScript. Use the fetch() method The fetch() is a browser’s method to get the data from the API. It takes the API URL as the first parameter we need to get data ... Read More
Lead generation, in other words, increasing your sales by converting possible buyers into confirmed buyers, is challenging but possible. There are times when business owners depended on print media and print advertisement, and the growth could have been faster. Days have changed since business is available online. Digital marketing platforms provide an excellent opportunity to reach out to your possible buyers and turn them into customers. If you want to generate leads through a digital platform but need guidance on where to start, read the article and get the insights. The world has become a global village, business has become ... Read More
Unpacking array elements means assigning array element values to the new variables. We can assign every element to the separate variables, or we can assign some elements to the separate variables, and for the remaining elements, we can create a new array. In this tutorial, we will learn to unpack array elements into separate variables using JavaScript. Syntax Users can follow the syntax below to unpack the array elements into separate variables. let array = [element1, element2, element3, element4]; let [a, b, c, d] = array; In the above syntax, a variable contains the value of element1, ... Read More
If you want to learn digital marketing, picking a suitable institution is daunting. However, Google has come forward with a professional skill-building certificate program where you can learn digital marketing online. No matter your previous experience and background, Google lets you enroll for the course anytime you want. The certificate has international accreditation and validity. In today’s post, we will brief you on how you can apply for Google’s digital marketing course and the benefits you’ll get if you enroll. The best part of the certificate course is you can access it for free. And you only need a laptop ... Read More
Many web applications allow users to upload a file. Also, it shows the file content with the filename after trimming the file extension. Furthermore, sometimes we require to store the file's content in the database with the filename without extension as a key. So, various use cases require us to use the file name of the uploaded file without extension. Here, we will learn multiple ways to trim the file extension from the string using JavaScript. Use the array.split(), array.pop() and array.join() method Every file name contains the file extension after the last dot in the file name. ... Read More
Toggling an element class means adding and removing a particular class from the HTML element based on a certain condition. For example, we want to highlight the HTML div element, and when the mouse enters, we need to add a particular class with a different style in the HTML element. Here, we will learn various approaches to toggle an element class using JavaScript and jQuery. In this tutorial, we will learn to toggle an element class in JavaScript. Using the toggle() method of the classList The toggle() method toggles the class in the element. It checks if ... Read More