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In this tutorial, we will learn how to handle bind an event using JavaScript. Events are the actions or occurrences in the system by the browser or users. There are various types of events that represent various activities performed by the browser or users. For example, if a user clicks on a button, it triggers an event named "click." Similarly, if a webpage finished loading, it triggered an event called "load." An Event Listener is a program that continuously listens to or waits for an event to occur. It is one of the most important parts of JavaScript. The ... Read More
This tutorial will show different ways to get the number of options in the drop-down list with JavaScript. While filling out any form online, users have to add unique information using the input method. However, the options they get in the drop-down list are already determined. Since there can be limited options mentioned in the drop-down, you might have to check the number using JavaScript. Using options.length method to get the number of drop-down options One of the simple ways to get access to the list of options is to get the list by its Id. We will use a ... Read More
In this tutorial, we shall learn to get the square root of 2 in JavaScript. The square root of 2 is an irrational number, and it is called Pythagoras's constant. We can’t denote it in fractions, and it has an infinite number of decimals; hence, we can’t find its exact value. The √2 value is 1.414. HTML encoding of the square root symbol in JavaScript is √. Next, we will discuss the available method to find the square root of 2. Using Math object's SQRT2 property In this part, we will see how the SQRT2 property of the Math object ... Read More
In this tutorial, we shall learn to find the smallest among numbers in JavaScript. Let’s discuss the available methods one after the other Using the Math.min() Method Here, the Math.min() is a static function of the placeholder object Math. If no parameters, the result is -Infinity. If the parameters are numbers, the result is the smallest among them. If any one of the parameters is not a number, the method returns NaN. This is an ECMAScript1 feature. Syntax Following is the syntax of Math.min() method − Math.min(a1, a2, …an) Here, we need to give numbers as parameters. Parameters ... Read More
The most common techniques for getting a day of the week and the name of the day in JavaScript will be covered in this tutorial. It is important to remember that if you are working on a small project, starting to install packages for something basic may be difficult. Small apps should be developed using JavaScript's built-in techniques; dependencies should only be included when absolutely necessary. Following are the approaches to get the day of the week in JavaScript − Using the getDay() Method Using the toLocaleString() Method Using the getDay() Method Use the JavaScript getDay() method ... Read More
In this tutorial, we learn how to find the digits between brackets using JavaScript RegExp. The ASCII values for the digits (0-9) start from 48 to 57. We denote the digits in the bracket as [0-9] in the regular expression. To find the digits in a range except for all digits, we can write the particular range. As to find the digits between 4 and 8, we could write it as [4-8] in the regular expression pattern. Now, our aim is to find digits inside the brackets in the text using RegExp in JavaScript. We could follow the below syntaxes ... Read More
In this tutorial, we will look at how to get the largest of zero or more numbers in JavaScript. The maximum of multiple numbers can be found using different techniques. The first technique we will introduce is the Math.max() method. The second technique will be the for-loop method. Following are the methods to get the largest of zero or more numbers in JavaScript − Using the Math.max() Method We can use the Math.max() method to find the largest of many numbers. It returns the largest value from the given multiple values. The input parameters should be numbers or can ... Read More
In this tutorial, we will learn how to get the exponent power of a number in JavaScript. The power of a number can be termed as how many times a particular number is multiplied by the number itself. For calculating the power of a number, we require two things, Base and Exponent. At the same time, a Base is a number that must be multiplied. Exponent (Usually written in the superscript) determines the number of times the number (Base) should be multiplied by itself. While we represent the power of a number using "^" or superscript when typing it, we ... Read More
In this tutorial, we will see how to find digits (0-9) using JavaScript RegExp. ASCII value for digits [0-9] starts from 48 to 57. If you want to print any ASCII value for a digit, 48 needs to be added to that digit. We denote digits as \d in the regular expression. A RegExp is an object that specifies the pattern used to do a search and replace operations on the string or for input validation. Syntax Following is the syntax for regular expression pattern of digit or \d character − new RegExp("\d") or simply /\d/ /\d/ is ... Read More
In this tutorial, we will learn how to find out the day of the month using JavaScript. We'll go over the most popular methods which are used for obtaining the name of the month and day in JavaScript. It is important that starting to install packages for something basic may be frustrating if you are working on a tiny project. JavaScript's built-in methods should be used to implement small applications; dependencies should only be added when absolutely necessary Using the getDate() Method A built-in data type for working with dates and times is the Date object. The new Date ... Read More