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
Articles by Shubham Vora
Page 70 of 80
How to initialize a boolean array in JavaScript?
In this tutorial, we will learn how to initialize a boolean array in JavaScript. We can initialize a boolean array in JavaScript in three ways− Using the fill() Method Using the Array from() Method Using the for Loop Using the fill() Method We can initialize a boolean array using the fill() method. The fill() method sets the static value of all array elements from the beginning index to the end index. Syntax //initialization of boolean array with fill() method let arrayName = new Array(array_length).fill(true/false); In the above syntax, we create an array with the name "arrayName" ...
Read MoreHow to include inline JavaScript inside an HTML page?
In this tutorial, we will learn how to include inline JavaScript inside an HTML page. Include inline JavaScript using onclick Event Just like an alert message showing up from the inline JavaScript inside an HTML page, we can also declare a function and call it. This method enabled us to write multiline code inside of a JavaScript function to do more tasks than just an alert message showing. In this example, we will change an element's text and background color by invoking a function from inline JavaScript code. Users can follow the syntax below to include inline JavaScript inside an ...
Read MoreHow to prevent duplicate JavaScript Variables Declaration?
In this tutorial, we will look at a few ways to prevent duplicate JavaScript variable declarations and comparison between them from understanding which one is suitable in a given context. The best way to prevent duplicate variable declaration is to avoid creating global variables. Let’s move forward to discuss this. Wrapping Code Within a Function Here, the variables declared inside the function are not accessible outside the function and vice versa. Users can follow the syntax below for using this method. Syntax (function(){ var varNam = "test"; }()) Here varNam is wrapped inside a function. Example ...
Read MoreHow to perform numeric sort in JavaScript?
In this tutorial, we will learn how to perform the numeric Sort in JavaScript. We can arrange the given numerical values by numerical sorting into ascending or descending order In JavaScript, we use the sort () method to sort numerical values. This method sorts the arrays of numbers, strings, and objects. It sorts the elements of an array and changes the order of the original array's elements. The array elements are cast to strings to determine the order and then compared and sorted. arr.sort() Where arr is the array of numeric elements that need to be sorted, this method ...
Read MoreHow to perform integer division and get the remainder in JavaScript?
In this tutorial, we will learn how to perform integer division and get the remainder in JavaScript. The division operator (/) returns the quotient of its operands, where the dividend is on the left, and the divisor is on the right. When another splits one operand, the remainder operator (%) returns the residual. It always takes the dividend sign. In the operation x% y, x is known as the dividend, and y is known as the divisor. If one of the operands is NaN, x is Infinity, or y is 0, the operation returns NaN. Otherwise, the dividend x is ...
Read MoreHow to load the previous URL in the history list in JavaScript?
In this tutorial, we will learn to load the previous page in the history list in JavaScript. The Window object in JavaScript accesses the window in the browser. This object contains many properties and methods required to do the tasks. The Window object also retrieves the information from the browser window. There is a history stack in every browser that saves the pages visited by the user. To access this history stack, we can use the history object that is the property of the Window object. By accessing the history from the browser, we can go to the next or ...
Read MoreHow to load the next URL in the history list in JavaScript?
In this tutorial, we will learn to load the next page in the history list in JavaScript. The Window object in JavaScript accesses the window in the browser. This object contains many properties and methods required to do the tasks. The Window object also retrieves the information from the browser window. There is a history stack in every browser that saves the pages visited by the user. To access this history stack, we can use the history object that is the property of the Window object. By accessing the history from the browser, we can go to the next or ...
Read MoreHow to get the hash part of the href attribute of an area in JavaScript?
In this tutorial, we will learn how to get the hash part of the href attribute of an area in JavaScript. The HTML element establishes an area within an image map with predetermined clickable zones. An image map allows you to correlate geometric regions of a picture with hypertext links. This element can only be used within the < map> element. The href property gives the area's hyperlink target. The element is not a hyperlink if the href attribute is not present. Following is a method used to get the href attribute’s hash part of an area in ...
Read MoreHow to get the value of the rel attribute of a link in JavaScript?
In this tutorial, we will learn how to get the value of the rel attribute of a link in JavaScript. The rel attribute expressed the relationship between the current document or website and the linked document or website. The search engine uses this attribute to get more information about the link, so it is important for the SEO of the website. The rel attribute can have different values like alternate, author, external, nofollow, etc.; each value means different information about the link. For example, ‘alternate’ means the link represents an alternate version of the current document. Using document.getElementById() Method In ...
Read MoreHow to get the value of the id attribute a link in JavaScript?
In this tutorial, we will learn how to get the value of the id attribute a link in JavaScript. The id attribute stores a unique value for an HTML element. The id of an element must be unique, and no other elements should not have the same id. The id attribute of a link can be found in different ways, and in this tutorial, we will discuss the most popular ways of doing it− Using document.getElementById() method Using document.getElementsByTagName() method Using document.querySelectorAll() method Using document.getElementById() Method In JavaScript, The document.getElementById() method is useful for getting different attributes value ...
Read More