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Front End Technology Articles
Page 527 of 652
How to fix problems related to the JavaScript Void 0 Error?
JavaScript void is an error, which can be seen on the web browser. This happened when a user blocks JavaScript coding on the web browser. This gives the void error when an attempt is made to run.The fix is to enable JavaScript. Let us see how to enable it in Firefox web browser −Open Firefox web browser and click Options. After clicking, you will reach the Settings. Here, click the Content tab as shown below −Now, check the box to enable JavaScript. After enabling, click the “Ok” button to save the settings.In newer versions of Firefox, you will get JavaScript ...
Read MoreHow to add a YouTube Video to your Website?
To add a YouTube Video to your website, you need to embed it. To embed a video in an HTML page, use the element. The source attribute included the video URL. For the dimensions of the video player, set the width and height of the video appropriately.The Video URL is the video embed link. The video we will be embedding our example will be YouTube.To get the embed link, go to a YouTube Video and click embed as shown below. You will get a link fro embed here −You can try to run the following code to learn how ...
Read MoreHow to Scroll to the top of the page using JavaScript/ jQuery?
ExampleLive Demo $("a").click(function() { $("html, body").animate({ scrollTop: 0 }, "slow"); return false; }); TOP OF PAGE This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is demo text. This is ...
Read MoreWhat is the difference between getter and setter in JavaScript?
GetterWhen a property is accessed, the value gets through calling a function implicitly. The get keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.SetterWhen a property is set, it implicitly calls a function and the value is passed as an argument. With that, the return value is set to the property itself. The set keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.ExampleHere’s an example showing how to implement both getter and setterLive Demo ...
Read MoreHow to delete a setter using the delete operator in JavaScript?
To delete a setter using the delete operator, use the delete keyword. Here’s how you can delete −delete obj.nameExampleYou can try to run the following code to learn how to delete a setterLive Demo var department = { deptName: "Marketing", deptZone: "North", deptID: 101, get details() { return "Department Details" + "Name: " + this.deptName + " Zone: " ...
Read MoreHow to define getter and setter functions in JavaScript?
GetterWhen a property is accessed, the value gets through calling a function implicitly. The get keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.SetterWhen a property is set, it implicitly call a function and the value is passed as an argument. With that the return value is set to the property itself. The set keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.ExampleHere’s an example showing how to implement both getter and setterLive Demo ...
Read MoreWhat are the latest operators added to JavaScript?
The latest operators added to JavaScript are spread operator and rest.Rest operatorWith rest parameter, you can represent number of arguments as an array. ES6 brought rest parameter to ease the work of developers. For arguments objects, rest parameters are indicated by three dots … and preceds a parameter.ExampleLet’s see the following code snippet to define rest parameter function addition(…numbers) { var res = 0; numbers.forEach(function (number) { res += number; ...
Read MoreUsage of rest parameter and spread operator in JavaScript?
Rest ParameterWith rest parameter, you can represent a number of arguments as an array. ES6 brought rest parameter to ease the work of developers. For arguments objects, rest parameters are indicated by three dots … and precedes a parameter.Let’s see the following code snippet to define rest parameter − function addition(…numbers) { var res = 0; numbers.forEach(function (number) { res += number; }); ...
Read MoreHow to handle Geolocation errors in HTML5?
HTML5 Geolocation API lets you share your location with your favorite websites. A JavaScript can capture your latitude and longitude and can be sent to backend web server and do fancy location-aware things like finding local businesses or showing your location on a map.Geolocation is complicated, and it is very much required to catch any error and handle it gracefully.The geolocations methods getCurrentPosition() and watchPosition() make use of an error handler callback method which gives PositionError object. This object has following two properties −PropertyTypeDescriptionCodeNumberContains a numeric code for the error.messageStringContains a numeric code for the error.The following table describes the possible ...
Read MoreWhat is for each...in a statement in JavaScript?
The for each...in loop iterates a variable overall value of the properties of objects. Note − The “for…each..in” is now deprecated. Do not use. SyntaxHere’s the syntax −for each (variablename in object) { statement or block to execute }ExampleHere’s an example, which will not run on any of the web browsers, since “for each..in” is now deprecated − var myObj = {myProp1:30, myProp2: 40}; var sum = 0; for each (var value in myObj) { sum += value; } document.write(sum);
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