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Javascript Articles
Page 227 of 534
How to implement multiple input checkbox in vanilla JavaScript?
We will learn how to implement multiple input checkbox functionality in vanilla JavaScript. The checkbox input selector will have the following features: Multiple options can be selected using checkboxes Chosen options will be displayed as a separate list with visual indicators Delete icon will be provided against each chosen option to uncheck/remove that option We will implement this functionality using only HTML, CSS, and JavaScript without any third-party libraries. Approach Create an object where keys represent checkbox labels and values (true/false) ...
Read MoreHow to add a tooltip to a div using JavaScript?
To add a tooltip to a div using JavaScript, first create a function that will generate the tooltip content. Next, add an event listener to the div that will call the function and display the tooltip when the div is hovered over. Finally, use CSS to style the tooltip and position it appropriately. A tooltip is a small text box that appears when a user hovers over a specific element on a webpage, such as a button, link, or image. The tooltip typically contains additional information or context about the element that the user is hovering over. Tooltips are ...
Read MoreHow to add an element horizontally in HTML page using JavaScript?
We can use the JavaScript method "createElement" to create a new element. Then, we can use the method "appendChild" to add the element to a parent element on the HTML page. To position the element horizontally, we can use CSS styles such as "display:inline-block" or "float:left/right" on the newly created element. Suppose a situation where we want to depict a graphical representation of a Linked List data structure. Every time the user clicks on a button, a new node, represented by a green circle in our case, should get prepended to the list of nodes horizontally. And the ...
Read MoreHow to Add Commas Between a List of Items Dynamically in JavaScript?
In web development, you often need to display lists of items with commas separating them, like "Item 1, Item 2, Item 3". This can be achieved using CSS or JavaScript to dynamically add commas between list items. HTML Structure Consider the following HTML list structure: Item 1 Item 2 Item 3 Item 4 We'll explore two approaches to add commas between these items dynamically. Using CSS (Recommended) The CSS approach uses the ::before pseudo-element to insert commas before ...
Read MoreHow to add content in section using jQuery/JavaScript?
Adding content to the section dynamically is useful for loading CSS, JavaScript, or meta tags after page load. jQuery and JavaScript provide several methods to accomplish this task programmatically. There are three main approaches to add content to the head section: Using jQuery's .append() method Using JavaScript's document.createElement() method Using JavaScript's insertAdjacentHTML() method Let's explore each approach with working examples. Using jQuery's .append() Method jQuery's append() method provides a simple way to add content to the head section: ...
Read MoreHow to add default horizontal scaling to a canvas-type text with JavaScript?
We can add default horizontal scaling to canvas text by using the scale() method on the 2D rendering context. This method transforms all subsequent drawing operations, including text, by scaling them horizontally and vertically. HTML Canvas HTML canvas is a 2D drawing surface that allows developers to create dynamic graphics, charts, and animations using JavaScript. The canvas element provides a powerful API for drawing shapes, text, and images directly in the browser. The canvas element acts as a container for graphics and can be manipulated using the Canvas API to create rich, interactive user experiences without external ...
Read MoreHow to check whether the background image is loaded or not using JavaScript?
In web development, checking whether a background image has loaded is crucial for ensuring proper page display and user experience. JavaScript provides several methods to detect when images finish loading, allowing developers to take appropriate actions or display fallback content. When dealing with background images, we can use the Image object in JavaScript to monitor loading status. This approach works by creating an image element programmatically and listening for load events, even when the image is used as a CSS background. Methods to Check Image Loading Status Using the onload event handler ...
Read MoreHow to Check Mentioned File Exists or not using JavaScript/jQuery?
Using JavaScript or jQuery, we can check whether a file exists and retrieve metadata about the file, such as its size, content type, last modified date, etc., without retrieving the actual file. The HTTP HEAD request is used in this case. An HTTP HEAD request is a type of HTTP request that asks the server to return the HTTP headers for a specified resource without the actual resource itself. Several methods can be used to send an HTTP HEAD request, but the most popular way is to use the $.ajax() method and XMLHttpRequest object. Users can define the request ...
Read MoreHow to add Summernote Editor to the webpage in Javascript?
To add Summernote Editor in a webpage, we first need to include the Summernote CSS and JS files in the head of our HTML document. Next, we need to initialize the Summernote editor on a specific text area or div element by calling the Summernote function on it. Finally, we can customize the editor's options and functionality by passing options as an object to the Summernote function. Let us first understand what Summernote editor is. What is Summernote? Summernote is a JavaScript library that allows for the creation and editing of rich text within a web ...
Read MoreHow to adjust the Width of Input Field Automatically using JavaScript?
We can use JavaScript to adjust the width of an input field automatically. This can be done by using the element's style property to set the width based on the input's value. By constantly updating the width as the user types, we can ensure that the input field is always the appropriate size for the input. Basic Approach Here is one approach to adjust the width of an input field automatically using JavaScript: Select the input field using JavaScript, for example, by using the document.querySelector() method: var inputField = document.querySelector("#myInput"); ...
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