Javascript Articles - Page 480 of 534

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

To return a string representing the source for an equivalent Date object, use the JavaScript toSource() method. This method returns a string representing the source code of the object.ExampleYou can try to run the following code to return a string representing the source for an equivalent Date object −           JavaScript toSource() Method                        var dt = new Date(2018, 0, 15, 14, 39, 7);          document.write( "Formated Date : " + dt.toSource() );          

To return the "time" portion of the Date as a string, using the current locale's conventions, use the toLocaleTimeString() method.The toLocaleTimeString method relies on the underlying operating system in formatting dates. It converts the date to a string using the formatting convention of the operating system where the script is running. For example, in the United States, the month appears before the date (04/15/98), whereas in Germany, the date appears before the month (15.04.98).ExampleYou can try to run the following code to return the “time” portion of the Date as a string −           JavaScript toLocaleTimeString ... 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

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

Use the screen.availHeight property to return the width of the user’s screen. The result will be in pixels and Taskbar feature won’t be included.ExampleYou can try to run the following code to learn how to work with the screen.availHeight property in JavaScript −Live Demo                    document.write("Height of the screen: "+screen.availHeight);          

To find a hexadecimal number character with JavaScript Regular Expression, use the following. Add the hexadecimal number here −\xddExampleYou can try to run the following code to find hexadecimal number character. It searches for hexadecimal number 53 i.e. S −           JavaScript Regular Expression                        var myStr = "Secure and Responsive!";          var reg = /\x53/g;          var match = myStr.match(reg);                    document.write(match);          

If you want to get the pixels the document scrolled to from the upper left corner of the window, then use the pageXoffset and pageYoffset property. Use pageXoffset for horizontal pixels.ExampleYou can try to run the following code to learn how to work with pageXOffset property in JavaScript −Live Demo                    div {             background-color: green;             height: 1500px;             width: 1500px;          }                              function scrollFunc() {             window.scrollBy(200, 200);             alert("Horizonal: " + window.pageXOffset);          }             Scroll                      

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