Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Javascript Articles
Page 164 of 534
How can we debug JavaScript using Firefox?
In this tutorial, we will learn to debug the JavaScript code using the Firefox web browser. Generally, we debug the code to fix the unknown bugs and errors. Mostly it happens with beginner programmers, code works successfully until the last night and suddenly crashes in the morning Programmers don’t need to worry now, even if code crashes. Once you learn to debug the code, you can fix any bugs in a few minutes and make it work fine If users want to learn to debug the code, the first step is to produce the code example with the error. So, ...
Read MoreHow to disable JavaScript in Firefox?
The Mozilla Foundation and its affiliate, the Mozilla Corporation, developed the extensible, free and open-source web browser known as Firefox. It displays web pages using the Gecko rendering engine, which incorporates up-to-date and future web standards. Under the code name Quantum, Firefox started implementing new technologies in 2017 to support parallelism and a more user-friendly UI. Windows 7 and later versions, macOS, and Linux all support Firefox. A variety of UNIX and Unix-like operating systems, including FreeBSD, OpenBSD, NetBSD, illumos, and Solaris Unix, have unofficial ports available. Additionally, iOS and Android are supported. The iOS version, like all other iOS ...
Read MoreHow to detect that JavaScript Cookies are disabled?
This tutorial will teach you how to detect if cookies are enabled or disabled on a website using JavaScript. Cookies are small text files on your computer that contain data. A web server terminates the connection after sending a web page to a browser and completely forgets about the user. The challenge of "how to remember information about the user" led to the invention of cookies. A cookie may contain the name of a user who visits a website. The cookie "remembers" the user's name for the subsequent visit to the website. Cookies allow you to store user information on ...
Read MoreWrite a palindrome program in JavaScript so that only alphanumeric values should be allowed?
Palindrome is a string that even when reversed will be the same as the original string. In simple words, the palindrome string will have odd length and the element in 0th index and the last index will be the same, element in 1st index will be the same as the second last element and so on. The palindrome contains alphanumeric elements; that means it contains the alphabet(a-z) and digits (0-9) as well. A palindrome string must look like − var str = "121Malayalam121"; Let’s understand with a suitable example. Let’s understand with a suitable example. Example 1 In the ...
Read MoreWrite a number array and using for loop add only even numbers in javascript?
An array in JavaScript is an datatype which contains similar types of data. A number array is defined as the array object with numbers as its content. These numbers are divided into even and odd types on a basic level of mathematics. In this article, we will look into outputting the even number of any number array. Syntax let arr = [val1, val2, val3, …]; Now, let us consider an array arr with numbered elements and print the content in the 0th index − Example let ...
Read MoreWrite a program to find the index of particular element in an array in javascript?
Array is an object which contains multiple values of the same datatype in a sequential order. In other words, we can say that an array is a special type of object in the JavaScript. SyntaxWe can create an array in two ways in JavaScript. The syntax are given below − var arr = [val1, val2, …]; var arr = new Array(“val1”, “val2”, …) Now let us look at a simple JavaScript program to create an array and print its index values − var arr = [1, 2, 3, 4, 5]; document.write(arr[0]); Here, the program returns the content in ...
Read MoreDoes it make sense to use HTML comments on blocks of JavaScript?
No, it is not recommended to use HTML comments to comment blocks of code. When JavaScript has first released some browsers didn’t have any support to understand the script. So a technique was then needed to hide the script code for older browsers. So that time the HTML comment within the JavaScript block was used to prevent the older browsers from showing the script code as text on the page. This technique was followed in the 1990s. Such browsers do not exist now, which wanted you to use HTML comments in JavaScript. Now all browsers understand the JavaScript blocks, so ...
Read MoreHow to handle bind an event using JavaScript?
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 MoreHow to get the number of options in the dropdown list with JavaScript?
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 MoreHow to get the largest of zero or more numbers in JavaScript?
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