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How can I validate a URL in JavaScript? I want to check the URL address for protocol, domain name, port and query string. The URL address is to be passed to a function while calling.
The following is my function in JavaScript. To help beginners easily understand the code, I want to add comments here: , What commenting standard should I follow to comment a function in JavaScript?
To validate a given number, use the isNan() function. It checks whether a value is a number of not. If true returns, it means the value is not a number. The following code returns false, which means the value is a number: ,
I have developed my website successfully. Now, I want to add a favicon, so that it is visible on the web browser tab whenever the site is loaded. How can I create a favicon using free Online Favicon Generators?
A favicon is a little icon visible on the web browser tab, just before the page title. It is generally a logo with the smaller size. Creating it is not something to worry about. Online Favicon Generators easily gives options to create a Favicon for free on button click. Let us see some of the free online Favicon Generators, Favicon.cc is a favicon creator and generator. Design or you can ea.....
I have a website with some pages. On clicking one of the links, I want users to redirect from my HTML page to another page i.e. how can I redirect from an HTML page immediately? How can I automatically redirect a web page to another URL?
Page redirection is a situation where you clicked a URL to reach a page X but internally you were directed to another page Y. It happens due to page redirection. To redirect from an HTML page, use the META Tag. With this, use the http-equiv attribute to provide an HTTP header for the value of the content attribute. The value of the content is the number of seconds; you want the page to redi.....
For one of my projects, I want to add drag and drop functionality in HTML5. How the Drag and Drop concepts works? I want to copy, reorder and delete items with the help of mouse click. Also, users can drop element anywhere on the release of a mouse button?
Drag and Drop (DnD) is powerful user interface concept which makes it easy to copy, reorder and deletion of items with the help of mouse clicks. This allows the user to click and hold the mouse button down over an element, drag it to another location, and release the mouse button to drop the element there. To achieve drag and drop functionality with traditional HTML4, developers would eithe.....
I have a form on my website to collect user data. The form is quite lengthy with a lot of fields. I don’t want the form to validate it so that users can save the form without completely filling it and fill it later whenever they have time. Can this be achieved with the novalidate attribute?
The novalidate attribute in HTML is used to signify that the form won’t get validated on submit. It is a Boolean attribute and useful if you want the user to save the progress of form filing. If the form validation is disabled, the user can easily save the form and continue & submit the form later. While continuing, the user does not have to first validate all the entries. You ca.....
I have a website in which I ask users to answer some basic questions. For this, I am using an HTML form. I need to add a color picker with input tye field for users to select their preferred color for website theme. How can I do this in HTML?
The <input type="color"> is for input fields with color. It will allow you to select a color from color picker. A color picker will be visible when you will click on the default color box. Here, you can set the default color also with the value attribute: You can try to run the following code to show a color picker with input type color: ,
A loop statement allows us to execute a statement or group of statements multiple times and following is the general form of a loop statement in most of the programming languages − Java programming language provides the following types of loop to handle looping requirements. Sr.No.Loop & Description1while loopRepeats a statement or group of statements while a given conditio.....
The following table lists the logical operators − Assume Boolean variables A holds true and variable B holds false, then − OperatorDescriptionExample&& (logical and)Called Logical AND operator. If both the operands are non-zero, then the condition becomes true.(A && B) is false|| (logical or)Called Logical OR Operator. If any of the two operands are non-zero, the.....
