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Tracking button clicks is a common task in JavaScript and can be achieved by using the addEventListener() method. By adding an event handler method to the button element and incrementing a variable each time the button is pressed, we can simply keep track of button clicks. We can quickly show the user how many clicks there have been by showing that information on a web page and keeping the clicks in localStorage. We can even save the clicks even after the user shuts the browser. Suppose we are building a simple calculator then we will need buttons that can ... Read More
Introduction Before understanding the counting of the lines in a DOM, let's first understand what DOM is? So, DOM is like an API for HTML and XML documents. This logic is enough to understand that DOM is an important concept for web developers. The DOM gives a programming interface for HTML and XML documents that gives programmers control over a webpage's structure, look, and content. So, in this article we will see how to count the number of lines in the given text on the web page in a DOM element. Method 1: Using the scrollHeight Property Making ... Read More
We can use jQuery html() method to copy the content of a div into another div. In jQuery, many other methods, such as clone(), append() & appendTo(), etc., can be used to copy the content. jQuery is a JavaScript library designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax. In this tutorial, we will use different methods in jQuery to copy the content of one div into another div. Using the html() Method Using the jQuery html() function is the simplest approach to copy the content of a div into ... Read More
Timezone handling is an essential component of every web application. The time that is recorded in the backend is usually in UTC format. When it is displayed to the user, however, it must be converted to the user's local time. This is possible with JavaScript. We'll look at how to use JavaScript to convert UTC date time to local date time in this blog. JavaScript Date JavaScript includes a "Date" class that allows us to work with dates and timings. The Date class includes various methods for working with dates and times, including − Date() - returns the current ... Read More
We can convert a string into a float using the parseFloat() function or the Number() constructor in JavaScript. Other approaches such as using + operator, eval() and parseInt() methods, can also be used for this. Converting strings to floating point numbers is a typical operation in JavaScript. This is required when working with numbers represented as strings, for as when reading data from an input field or a CSV file. In this article, we will learn these methods in detail. Conversion Methods There are several ways to convert a string into a float in JavaScript. The most common methods ... Read More
We can use replace() method to convert special characters to HTML in JavaScript. This method can also be applied with a map. There are many other methods that can be used for this task. We will discuss these methods in detail in this article. We will start our discussion with the need to convert special characters to HTML then, we will talk about the methods of converting the special characters. Firstly, let’s talk about some concepts of characters, and then we will come up with our next topics. Need to Convert Special Characters to HTML We have seen our ... Read More
We can use the logical OR operator, double bitwise NOT operator, strict equality operator, or the inNaN() function to convert NaN to 0 using JavaScript. NaN in Javascript means Not a Number, whose type is Number but actually, it is not a number. In this article, we will learn to approaches to convert NaN to Boolean. Using the Logical OR (||) Operator Using the Double Tilde (~~) Operator Using the Strict Equality (===) Operator Using the isNaN() function Using the Logical OR (||) Operator The logical OR (||) operator is used to check the truthiness of ... Read More
There are different ways to convert a map keys to an array in JavaScript. You can use the map keys() method to access the keys in a map and then apply the Array form() method to create an array of the accessed keys. You can also apply the spread operator instead of the Array form() method to create an array of key. You are given a javascript Map and the task is to convert the Map’s keys into array. Here is the example given below Given Map − { 1: "India", 2: "Russia", 3: "USA", 4: "Japan", 5: ... Read More
JSON is a powerful data format to exchange data from server to client and vice versa. Many time JSON data is received in a String format and we need to convert it to a usable JSON object. In this process, it’s an important requirement to convert string data into Date format. In this article, we will learn how to convert JSON results into a Date string using Javascript. The JSON objects contain the date like this − { name: "John", time: '/Date(1559072200000)/' } And the result will be − Wed May 29 2019 ... Read More
We can use jQuery.makeArray() method or jQuery.each() method to convert a list of elements into an array using jQuery. The makeArray() method is most convenient way to perform this task. This method is used to convert an object into a native array. Using jQuery makeArray() method The $.makeArray() method in jQuery converts an array-like object into a JavaScript array. It takes a single argument and convert it to array. The following is syntax of $.makeArray() method- $.makeArray(obj) Here obj is an object that we want to convert to an array. Here are the steps ... Read More