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Articles by usharani
Page 2 of 6
How can I set the default value for an HTML \'select\' element?
To set the default value for an HTML element, we can use the HTML selected attribute. This attribute allows you to display a predefined option when the dropdown menu first loads. In this article, we'll explore different approaches to set default values for HTML select elements with practical examples. Using the selected Attribute The most common method is adding the selected attribute to the desired element: Default Select Value Select Your Course ...
Read MoreHow to replace default meta tag from "layout" with customizing meta tags in "view" with HTML?
Meta tags provide essential information about HTML documents, including descriptions, keywords, and author details. When building web applications, you often need default meta tags in your layout that can be customized for specific pages or views. The most effective approach is to define default meta tags in your application configuration and override them in individual views when needed. This ensures consistent metadata while allowing page-specific customization. Step 1: Configure Default Meta Tags First, define your default meta tag values in the application configuration file: Step 2: Register Meta Tags in Layout ...
Read MoreWhat is oncontextmenu event in JavaScript?
The oncontextmenu event in JavaScript triggers when a user right-clicks on an element, causing the context menu to appear. This event allows you to handle right-click interactions and can be used to customize or prevent the default context menu behavior. Syntax element.oncontextmenu = function() { // Handle right-click }; // Or using addEventListener element.addEventListener('contextmenu', function(event) { // Handle right-click }); Example: Basic Context Menu Event Here's how to handle the oncontextmenu event when a user right-clicks on an element: ...
Read MoreUsage of font-size property in CSS
The font-size property in CSS controls the size of text elements. It accepts various units and keywords to specify how large or small text should appear on a webpage. Syntax font-size: value; Font Size Values The font-size property accepts several types of values: Absolute keywords: xx-small, x-small, small, medium, large, x-large, xx-large Relative keywords: smaller, larger Length units: pixels (px), em, rem, points (pt) Percentage: relative to parent element's font size Example: Different Font Size Values ...
Read MoreHow to call a Java function inside JavaScript Function?
JavaScript cannot directly call Java methods since Java runs on the server while JavaScript runs in the browser. You need to use a server-side framework like JSP or create REST endpoints to bridge this communication. Method 1: Using JSP with AJAX This approach uses AJAX to make HTTP requests to JSP pages that execute Java code. JavaScript Code // JavaScript function to call Java method via JSP function callJavaFunction() { $.ajax({ url: '/project/myexecution.jsp', ...
Read MoreHow to use case-insensitive switch-case in JavaScript?
To use case-insensitive switch-case in JavaScript, convert the input to either uppercase or lowercase before the switch statement. This ensures consistent comparison regardless of the original case. Syntax let input = userInput.toUpperCase(); // or toLowerCase() switch (input) { case 'OPTION1': // Handle case break; case 'OPTION2': // Handle case break; default: ...
Read MoreHow do I get the current date in JavaScript?
To get the current date in JavaScript, you can use the Date object along with various methods to extract different parts of the date. Getting the Current Date Object The new Date() constructor creates a Date object representing the current date and time: var currentDate = new Date(); console.log(currentDate); 2024-01-15T10:30:45.123Z Getting the Day of the Month The getDate() method returns the day of the month (1-31): var date = new Date(); var dayOfMonth = date.getDate(); console.log("Day of month: " + dayOfMonth); Day of month: 15 ...
Read MorePerform Animation on CSS line-height property
The CSS line-height property can be animated to create smooth transitions between different line spacing values. This is useful for creating dynamic text effects where the vertical spacing between lines changes over time. Syntax selector { line-height: value; animation: animation-name duration timing-function iteration-count; } @keyframes animation-name { from { line-height: initial-value; } to { line-height: final-value; } } Example: Basic Line Height Animation The following example demonstrates how to animate the line-height property from 20px to 50px ...
Read MoreCSS grid-area Property
The CSS grid-area property is a shorthand property that allows you to specify a grid item's placement within a grid container by setting its grid-row-start, grid-column-start, grid-row-end, and grid-column-end values in a single declaration. Syntax selector { grid-area: grid-row-start / grid-column-start / grid-row-end / grid-column-end; } Possible Values ValueDescription line numberGrid line numbers (1, 2, 3, etc.) span nSpan across n grid tracks autoAutomatic placement (default) grid-area-nameReference to a named grid area Example: Grid Area with Line Numbers The following example demonstrates how to use grid-area ...
Read MoreExtend the animation properties in both directions with CSS
The CSS animation-fill-mode property with the value both extends animation properties in both directions − applying styles from the first keyframe before the animation starts and retaining styles from the last keyframe after the animation completes. Syntax selector { animation-fill-mode: both; } How it Works When animation-fill-mode: both is applied − Before animation: The element adopts styles from the first keyframe (0% or from) After animation: The element retains styles from the last keyframe (100% or to) Example The following example demonstrates extending animation properties ...
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