To return the number of images in a document, use the images property in JavaScript.ExampleYou can try to run the following code to get the count of images −Live Demo                                            var val = document.images.length;          document.write("Number of images in the document: "+val);          

In this tutorial, we will learn how to convert NaN to String. NaN in JavaScript means Not a Number, whose type is Number but actually, it is not a number. To Convert, the NaN to a String we use Multiple methods some of which are discussed below. Using the String() Method Using the toString Method Using the || Operator Using the isNaN() Method Using Ternary Operator Using the String() Method The String() method in JavaScript is used to convert different values to String. To convert the NaN into String Just pass the NaN to this method. Here is ... Read More

The ondragover event triggers when the dragged element is over the drop target.ExampleYou can try to run the following code to learn how to implement ondragover event in JavaScript −Live Demo                    .drag {             float: left;             width: 100px;             height: 35px;             border: 2px dashed #876587;             margin: 15px;             padding: 10px;          }   ... Read More

The Browser Object Model (BOM) in JavaScript includes the properties and methods for JavaScript to interact with the web browser.BOM provides you with a window objects, for example, to show the width and height of the window. It also includes the window.screen object to show the width and height of the screen.ExampleYou can try to run the following code to learn how to get screen height and width −Live Demo                    document.write("Screen width: " + screen.width);          document.write("Screen width: " + screen.width);          

In this tutorial, we will learn to get the number of internet host port for the current page in JavaScript. The Port number is a 16-bit unique ID of protocols. The port number ranged from 0-65535. The port number is used to find a process by the server. There are 65535, and each port number is associated with its identity. So, let us look to get the port number for the current page in JavaScript. Following are the methods by which we can get the port number of the internet host − Using the location.port Property Using the URL ... Read More

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 More

The ondrop event triggers when a dragged element is dropped on the target. You can try to run the following code to learn how to implement ondrop event in JavaScript −ExampleLive Demo                    .drag {             float: left;             width: 100px;             height: 35px;             border: 2px dashed #876587;             margin: 15px;             padding: 10px;          } ... Read More

The window.history object is used to go back or to the next page of the web browser. It has the browser's history and comes with the following two methods −history.back − Go to previous URLhistory.next − Go to next URLExampleYou can try to run the following code to learn how to work with window.history object in JavaScript −Live Demo                    function backPage() {             window.history.back()          }          function nextPage() {             window.history.next()          }                      

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 More

In this tutorial, we will learn how to convert a string to uppercase letters for the host's locale in JavaScript. While using a locale language to write for a website, we might have to convert the sentence from lowercase to uppercase without changing the structure of the string. Using the toLocaleUpperCase() Method In JavaScript, we use the toUpperCase() Method as well as the toLocaleUpperCase() to change the letters of a string to uppercase. Although both methods give similar output the toLocaleUpperCase() is used primarily for local languages. Syntax We will use the following syntax to convert the letters of the ... Read More