In this tutorial, we will look at a few methods to remove a property from a JavaScript object. And compare them to understand which one is suitable in a given context. Let's move forward to discuss this. Using the delete Operator Here, the delete operator removes the keys from the object, one at a time. The delete operator does not clear the memory directly. The delete keyword works on objects only. We can't use it on variables or functions. We should not use the delete keyword on predefined JavaScript object properties as it may give errors. The deleted property displays ... Read More

On a web page, if you want to represent a folder-view, like in case of web hosting filed, then create a tree view. The root or the home are always clickable in a tree view. We set it clickable using the cursor property with the value pointer. The arrow key is rotated 90 degrees when it is clicked. This is achieved using the rotate() method with the transform property. Set the tree view root The root for the tree view is set using the . Within that, is set − ... Read More

To remove a class name from an element with JavaScript, the code is as follows −Example Live Demo    .newStyle {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;       width: 100%;       padding: 25px;       background-color: rgb(147, 80, 255);       color: white;       font-size: 25px;       box-sizing: border-box;       text-align: center;    } Remove className with JavaScript Example Remove Class Click the above button to remove className from below div This is a DIV element.    document.querySelector(".btn").addEventListener("click", addClassName);    function addClassName() {       var element = document.getElementById("sampleDiv");       element.classList.remove("newStyle");    } OutputThe above code will produce the following output −On clicking the the “Remove Class” button −

To switch between dark and light mode with JavaScript, the code is as follows −Example Live Demo    body {       padding: 25px;       background-color: white;       color: black;       font-size: 25px;       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .dark-mode {       background-color: black;       color: white;    }    .toggleButton {       padding: 12px;       font-size: 18px;       border: 2px solid green;    } Toggle Dark/Light Mode Example Toggle dark mode Click the above button to toggle dark mode    document .querySelector(".toggleButton") .addEventListener("click", toggleDarKMode);    function toggleDarKMode() {       var element = document.body;       element.classList.toggle("dark-mode");    } OutputThe above code will produce the following output −On clicking the “Toggle dark mode” button −

On a web hosting website, you must have seen the price plans. Also, on a website that sell membership, a pricing comparison table is visible. Such tables compare the features of the various plans, for example, free and paid, or free, business, enterprise, etc. plans. Let us see how to create a responsive pricing table with CSS i.e., how will such tables will be visible on different devices. Compare Fields Set the fields for comparison. For that, you can use the and mention the features. Here, we have shown a single plan i.e., pricing table for free membership i.e. ... Read More

To create fixed/sticky header on scroll with CSS and JavaScript, the code is as follows −Example Live Demo    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;       margin: 0px;       padding: 0px;       height: 150vh; /*To produce scroll bar*/    }    .header {       width: 100%;       background-color: rgb(52, 21, 110);       color: white;       padding: 50px;       font-size: 20px;    }    div.sticky {       position: fixed;       top: 0; ... Read More

To create a gradient background color on scroll, the code is as follows −Example Live Demo    body {       height: 250vh;       color: white;       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;       background: linear-gradient(          141deg,          #a47dff 0%,          #4e28a7 40%,          #22053d 65%,          #72a4ff 75%       );    } Change Background Gradient on Scroll Example Lorem ipsum dolor sit amet consectetur adipisicing elit. Repellendus, laborum minus? Vero accusantium laborum quas cum, sed obcaecati quibusdam dignissimos. Scroll to see the effect. OutputThe above code will produce the following output −While scrolling the gradient will shift from dark blue to light blue −

The smooth scrolling effect can be set on a web page using the scroll-behaviour property. Set the value to smooth. Check this by implementing scrolling effect on the click of buttons i.e., reaching the below section by clicking a button the top, and vice versa. Let us see how to create a smooth scrolling effect with HTML and CSS. Smooth scrolling for the web page To begin with, under the , set the scroll-behaviour property to implement the property for thr entire web page − html { scroll-behavior: smooth; } Set the two sections The ... Read More

If you want to show notifications to the user about any information, such as a coupon for buying the product, you can create a snackbar. Use them as popups to display a message at the bottom of the screen. Generally, the snackbar vanish after some time. The snackbar appears to fadein and fadesout after some time. Let us see how to create a snackbar on the click of a button with CSS and JavaScript. Create a button for the snackbar For the snackbar to appear, you need to click on a button. Create a button using the element − ... Read More

The JavaScript DataView allows us for reading and writing in multiple number types in binary ArrayBuffer by providing a low level interface. We cannot manipulate ArrayBuffer directly without using DataView().Following is the code for implementing JavaScript DataView −Example Live Demo Document    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .sample {       font-size: 20px;       font-weight: 500;    } JavaScript DataView() CLICK HERE Click on the above button to change the array buffer contents using DataView()   ... Read More