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 More

To delete all cookies with JavaScript, you can try to run the following code. Here, we’re using an array and the split() method to get all the cookies and finally delete themExampleLive Demo                    var num = 1;          function addCookie(){             document.cookie = num+" = "+num;             num++;          }          function listCookies(){             var result = document.cookie;             document.getElementById("list").innerHTML = result;          }          function removeCookies() {             var res = document.cookie;             var multiple = res.split(";");             for(var i = 0; i < multiple.length; i++) {                var key = multiple[i].split("=");                document.cookie = key[0]+" =; expires = Thu, 01 Jan 1970 00:00:00 UTC";             }          }                     ADD       LIST COOKIES       REMOVE       Cookies List          

JavaScript object properties are the keys inside the body of a JavaScript object. Object properties can be any of the three primitive data types, or any of the abstract data types, such as another object. Object properties are usually variables used internally in the object's methods, but can also be globally visible variables that are used throughout the page. These properties can either be statically typed by the programmer at the time of object declaration, or they can be modified or created later according to the need. There are two ways of creating or adding properties to a JavaScript object ... Read More

This tutorial will teach us to show a euro or HTML entity in JavaScript alert Window. There are three pop-up windows in JavaScript. Alert box, Confirm box, and Prompt box. The alert box is useful to show some information to the user, such as a welcome message or user’s info. It contains the ok button, and when the user clicks on that, it closes. The confirm box is used to show the confirmation message. In many applications, you have seen that when you try to delete something, it shows the confirmation message. When you click on the ok, it returns ... Read More

The window.location object can be used to get the current URL.window.location.href property returns the href (URL) of the current page. We could also use window.location or location in place of window.location.href.We could also use document.documentURI and document.URL properties.document.documentURI returns the location of the document as a string.document.URL returns the URL of the document as a string.Let’s understand how to get the current URL with JavaScript using the above properties with the help of program examples.Example 1 − Using window.location.href property.In this example we use window.location.href to get the current URL. In below example you can try using window.location or location ... Read More

With JavaScript, to set more than one cookie, set document.cookie more than once using the; separator.ExampleYou can try to run the following code to set multiple cookies −Live Demo                 var num=1;       function addCookie() {          document.cookie=num+"="+num;          num++;       }       function listCookies() {          var result = document.cookie;          document.getElementById("list").innerHTML=result;       }       function removeCookies() {          var res = document.cookie;          var multiple = res.split(";");          for(var i=0;i

The new keyword in JavaScript is the new operator, which creates an instance of a user-defined object type.ExampleYou can try to run the following code to create JavaScript objects using new operator −Live Demo                          var dept = new Object();          dept.employee = "Amit";          dept.department = "Technical";          dept.technology ="Java";          document.getElementById("test").innerHTML =          dept.employee + " is working on " + dept.technology + " technology.";           OutputAmit is working on Java technology.

To pop-up a print dialog box using JavaScript, use the print() method. With the dialog box, you can easily set the printing options like which printer to select for printing.This is the dialog box −ExampleYou can try to run the following code to learn how to print a page −Live Demo           Click to Print                function display() {             window.print();          }          

In this tutorial, we are going to create one custom alert box using JavaScript. The alert box signifies a box that appears with some message on it whenever you click a button and if we add some styling to the box and mould it according to our requirements then it will be a custom alert box. Approach to design custom alert box using JavaScript To create a custom alert box, we will use a jQuery library which is used to simplify the HTML DOM manipulation and it also provides us with better use of event handling and CSS animation with ... Read More

In this tutorial, we will look at a few ways to print a number with commas as thousands of separators in JavaScript and compare them to understand which one is suitable in a given context. Why do we do number formatting? In English, commas are used to separate numbers bigger than 999. Dot is the thousands separator in Germany. Sweden uses space. The separator is added after every three digits from the right. Let’s briefly introduce the methods. Using the toLocaleString() Method Here, the built-in locale string method localizes the number format based on the country. ... Read More