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A string representation of the given node's name is returned by the nodeName property. When a node has attributes, it produces a string with the name of the corresponding attribute. When a node is an element, it returns a string with the name of the tag. This property can only be read. Each element on a webpage can be accessed through a node, which is a component of the DOM tree. Every node is an object with a number of methods and properties; this is why nodes are sometimes known to as node objects. The browser builds a tree ... Read More
The user's current location can be found using the getCurrentPosition() method. The Geolocation API that HTML5 offers us allows us to know the user's geographic location. The Geolocation API provides the latitude and longitude of the user's current location, that are thereafter delivered to the backend via JavaScript and displayed on the website. The read-only longitude property of the GeolocationCoordinates interface is a double-precision floating point value that indicates a location's longitude, expressed in decimal degrees. The GeolocationCoordinates object is a component of the GeolocationPosition interface, since it is the object type delivered by Geolocation API calls which collect and ... Read More
In JavaScript, you may extend both classes and objects with the extends keyword. It is frequently used to build classes that are children of other classes. In addition to built-in objects, customized classes can also be subclass using the extends keyword. The classes serve as the blueprint for a real-world item so that we may easily change, access, and utilise them in programming. It is specified to establish an abstract data type to hold a specific sort of information together with the methods for manipulating that information. You use the extends keyword to use class inheritance. Any constructor with the ... Read More
The document's current title can be obtained or changed using the document.title attribute. When present, the value of the is used by default. You can change or get the current title of the document using the document.title attribute. By providing a new title as a string to this attribute, the page's title can be changed. The chosen title will immediately be reflected in the website's title. In this article you will see two types of methods used to change or use Document.title() use in JavaScript Using the document.title property − You may set or get the current title ... Read More
JavaScript is a lenient object-oriented language. We'll look at various JavaScript object creation methods in this article. It is crucial to know that JavaScript is an object-oriented language based on prototypes instead of classes before moving on. It can be more difficult to understand how JavaScript enables you to build hierarchies of objects and to get an inheritance of properties and their values because of this different foundation. Programming objects can combine variables, functions, and data structures. In other words, objects can hold values, you can use objects to manipulate values, and you can combine values into more complicated objects, ... Read More
Property accessors offer dot notation or bracket notation-based access to an object's properties. Associative arrays are a good way to understand objects (a.k.a. map, dictionary, hash, lookup table). The names of the property names are the keys inside this array. A difference between properties and methods is frequently made when discussing an object's properties. But the distinction between a property and a technique is simply an established practice. When a property's value is a reference to an example of a Function, for example, that property can be invoked to perform a function. Syntax ObjectName[propertyName] You will study JavaScript getter ... Read More
To remove an element from an array with JavaScript, use the shift() and pop() functions. However, there is a slight distinction among them. While pop() removes the last element from an array, shift() removes the first element from an array. When using the shift() method, the value that was deleted is returned after the element at the zeroth position is removed and values at subsequent indexes are shifted downward. The return value is undefined if the length property is 0. A function that modifies data is shift(). Both the substance and the length of this are altered. Use arr.slice(1) instead ... Read More
Internet provides us a lot of services which we can access through the respective websites. Many of times, we are need to search information on a particular topic. To perform search on Internet, we can make of search engine like Google, Yahoo, Ask, Bing etc. You must have observed the textbox available for entering the search keywords. We type the keywords and it takes us to the next page where the matched results, fetched from the server, are displayed. When we design a form in HTML to capture data from the user, we use several controls. We can also make ... Read More
Electronic-Mail is a facility available on Internet using which we can send formal emails to others by using their e-mail addresses. There are many email service providers like Yahoo, Gmail, Hotmail etc. We need to get registered with these service providers so that we can get an email address of our own choice. An e-mail address consists of two parts – user name and domain name. a user name can consist of upper or lower case letters, digits, special characters and dots. The maximum length of user name can be upto 64 characters and the domain name can have 253 ... Read More
Html provides various tags to design a user interface. There is a specific category of tags which are readily available to provide options to the user to choose date and time type of data. To create the time control using HTML, we have tag, where time value can be used in TYPE attribute of tag. By default, time control will display the output in 24 hr format. Time can be represented in hh:mm(hours::minutes) format or if you want to mention seconds also, then the format will be hh::mm::ss. The value of hour can be selected between 0-24 and ... Read More