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Front End Technology Articles
Page 221 of 652
How to access a JavaScript object using its own prototype?
We can able to access the existing object by creating its own prototype using a javascript method called "Object.create()". Using this method we can inherit the properties from the existing properties to the newly created prototype. Let's discuss it in a nutshell.syntaxObject.create(existing obj);This method takes the existing object and creates its own prototype so that the properties will be inherited from the existing object to the newly created prototype.ExampleIn the following example, Initially, an object named "person" is created and the using "Object.create" its own prototype is created and assigned to a variable "newper". Later on, using the prototype the ...
Read MoreRegular functions vs Arrow functions in JavaScript?
Regular functions vs Arrow functionsAn arrow function is used to write the code concisely. Both functions regular and arrow work in a similar manner but there are some differences between them. Let's discuss those differences in a nutshell.syntax of an arrow functionlet x = (params) => { // code };syntax of a regular functionlet x = function functionname(params){ // code };Usage of "this" keywordIt is unable to use "this" keyword in arrow functions whereas in regular functions it can be used without any disturbance.ExampleIn the following example, both regular(rectangle) and arrow(square) functions were used inside the object "num", which consists of len(length) ...
Read MoreHTML for Attribute
The for attribute of the element is used to set an element with a label.SyntaxFollowing is the syntax −Above, id is the associated element id.ExampleLet us now see an example to implement the for attribute of element − Last Semester Results Result Student: Subject: Rank: OutputThis will produce the following output −In the above example, we have a form with some fields − Result Student: Subject: Rank: We have set the label for the field using for attribute of the element, for ...
Read MoreHTML min Attribute
The min attribute of the element is used to set the lower bound for . However, the element is used to measure data with a give range like water impurity level and it is set using the min and max attribute.SyntaxFor obvious reasons, the min value is less than the max value. The default is 0. Following is the syntax −The num above is a number in floating-point that sets the min attribute of the element.ExampleLet us now see an example to implement the min attribute of the element − Water Levels Impurity Level ...
Read MoreHTML DOM Anchor hostname Property
The HTML DOM Anchor hostname property returns only the hostname of the URL. It returns the domain name.SyntaxFollowing is the syntax to set the hostname property −anchorObj.hostname = hostnameAbove, the hostname is the hostname of the URL.SyntaxFollowing is the syntax to return the hostname property −anchorObj.hostnameExampleLet us now see an example to implement the DOM Anchor hostname property − Company Our Team Display Anchor Part Display Host Part Display Hostname function display() { var a = document.getElementById("mylink").hash; document.getElementById("myid").innerHTML = a; } function display2() { ...
Read MoreHTML max Attribute
The max attribute of the element is used to set the upper bound for . However, the element is used to measure data with a give range like water impurity level and it is set using the min and max attribute.SyntaxFollowing is the syntax −The num above is a number in floating-point that sets the max attribute of the element.ExampleLet us now see an example to implement the max attribute of the element − Water Levels Impurity Level TDS Level OutputThis will produce the following output −In the above example, we ...
Read MoreHTML File Paths
File path in a website is the location of a file in that website. This path might be relative (in reference to current path) or absolute (full URL of file).SyntaxFollowing is the syntax:1) Relative pathsrc="ImgFolder/picture.jpg"Orsrc="../ImgFolder/picture.jpg"Orsrc="/ImgFolder/picture.jpg"2) Absolute pathsrc="http://www.tutorialspoint.com/html5/foo.mp4"Let us see an example of HTML DOM Video src property−Example HTML DOM Video src * { padding: 2px; margin:5px; } form { width:70%; margin: 0 auto; text-align: center; } input[type="button"] { border-radius: 10px; } ...
Read MoreHTML for Attribute
The HTML for attribute bounds the element to the first labelable element which has an id same as the value of for attribute.SyntaxFollowing is the syntax −1. Returning value of for attribute −labelObject.htmlForExampleLet us see an example of for attribute − Label htmlFor form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; margin:5px; } input[type="button"] { border-radius: 10px; } Label-htmlFor Current Editor: ...
Read MoreHTML isTrusted Event Property
The HTML isTrusted event property returns a boolean value corresponding to whether the event is trusted or not.NOTE − If invoked by a script the isTrusted returns false and if invoked by user then isTrusted returns true.Let us see an example of isTrusted event property −Example HTML isTrusted form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; margin:5px; } input[type="button"] { border-radius: 10px; } ...
Read MoreHTML DOM Table caption Property
The HTML DOM table createCaption() method generates an empty element and adds it to the table in an HTML document.SyntaxFollowing is the syntax −object.createCaption()Let us see an example of HTML DOM table createCaption() method −Example body { color: #000; background: lightblue; height: 100vh; text-align: center; } table { margin: 2rem auto; } caption { color: #db133a; } .btn { background: #db133a; border: none; ...
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