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Javascript Articles
Page 269 of 534
How to get the protocol and page path of the current web page in JavaScript?
Protocol The URL segment that specifies the data transfer protocol to be utilised is referred to as the protocol of a URL. In this example, https:// indicates for the HTTPS protocol. We will learn how to obtain the website URL for the currently seen webpage or website in this article. The 'URL' property of the Document object, which has data on the current URL, is used to get the current URL. The "URL" property returns a string that includes the complete address of the currently seen page as well as the HTTP protocol, such as (http://). Syntax Following is the ...
Read MoreHow to get the code name and product name of the browser in JavaScript?
When a user accesses a web application using JavaScript, the "navigator" object contains details about the browser they are currently using. You may be aware that each browser functions differently when it comes to how it interprets JavaScript. In this case, the navigator object supports in modifying your application to the user's browser preferences. The browser engine or product name can be viewed in JavaScript by accessing the "navigator.product" attribute of a navigator object. In any browser, "Gecko" is always the value of the Navigator.product property. Only compatibility considerations are used to maintain this characteristic. Syntax The JavaScript syntax for ...
Read MoreHow to find the href and target attributes in a link in JavaScript?
First, let us understand how attributes work in JavaScript. Any element's attributes can be changed with JavaScript. The attributes property stores them, and invoking it gives you direct access to them. If we target an element with a class, the class will also appear as an attribute, and we can actually utilize these attribute methods to change classes if we so choose. Now, keep in mind that while we have designated the properties and methods for classes, you can also utilize all of these characteristics to manipulate classes in any element if necessary. href attributes in JavaScript In the href ...
Read MoreHow to negate a predicate function in JavaScript?
In JavaScript, a predicate function is a function that returns a Boolean value. In other words, it is a function that tests whether a certain condition is true or false.There are times when we need to negate a predicate function. That is, we need to return the opposite Boolean value.There are several ways to negate a predicate function in JavaScript.Using the ! operatorThe most common way to negate a predicate function is to use the ! operator.For example, consider the following predicate function −function isEven(num) { return num % 2 === 0; }To negate this function, we can use ...
Read MoreHow to make active tab in navigation menu using HTML CSS & JavaScript?
With the help of HTML, CSS, and JavaScript, it is possible to create a navigation menu with a curved active tab. This can be done by using the ::before and ::after pseudo-elements to create the desired shape, and then using JavaScript to add the active class to the element. HTML The HTML for this navigation menu is very simple. There is a ul element with a class of "nav" and within that, there are six li elements, each with a class of "nav-item". Home About Services Portfolio ...
Read MoreHow to Create Fullscreen API using JavaScript?
The Fullscreen API is a browser API that allows developers to request fullscreen display from the user, and to exit fullscreen when desired. Using the Fullscreen API is relatively simple. First, you must check if the browser you are using supports the Fullscreen API. You can do this by checking for the presence of the Fullscreen API's enabled property on the document object. If the browser does not support the Fullscreen API, you can still provide a fullscreen experience to your users by using another method, such as opening a new browser window. Assuming the browser does support the Fullscreen ...
Read MoreHow to return an object by parsing http cookie header in JavaScript?
Cookies are small pieces of data that are sent from a website to a user's web browser. They are used to store information about the user, such as their preferences or login status. When a user visits a website, their web browser will send a request to the server. The server will then send a response, which includes a set of headers. One of these headers is the "Cookie" header, which contains a list of all the cookies that are associated with the website. Parsing the Cookie Header In order to parse the Cookie header, we need to first split ...
Read MoreHow to Generate Random Birthday Wishes using JavaScript?
In this tutorial, we will learn how to generate a random birthday wish using JavaScript. We will use the Math.random() method to generate a random number between 1 and 10. This number will be used to select a birthday wish from an array of wishes. The Math.random() Method The Math.random() method is a built-in function in JavaScript that returns a random number between 0 ( inclusive) and 1 (exclusive). Generating a Random Birthday Wish To generate a random birthday wish, we will use the Math.random() method to generate a random number between 1 and 10. This number will be used ...
Read MoreWhat is Variable Shadowing in JavaScript?
In programming, shadowing occurs when a variable declared in a certain scope (e.g. a local variable) has the same name as a variable in an outer scope (e.g. a global variable). When this happens, the outer variable is said to be shadowed by the inner variable. In JavaScript, variables can be shadowed in both the global and function scope. Global variables can be shadowed by function-scoped variables, and function-scoped variables can be shadowed by block-scoped variables declared with the let or const keyword. Variable Shadowing in the Global Scope In the global scope, shadowing occurs when a variable declared with ...
Read MoreHow to create infix to postfix converter in JavaScript?
An infix to Postfix converter is a tool that converts an infix expression to a postfix expression. In this tutorial, we will build the infix to postfix converter using JavaScript. What is an infix expression? Infix expression is an expression in which the operators are between the operands. For example, the expression "3 + 4" is an infix expression. What is a postfix expression? A postfix expression is an expression in which the operators are after the operands. For example, the expression "3 4 +" is a postfix expression. How does the Infix to Postfix converter work? The converter first ...
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