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Articles by Samual Sam
Page 36 of 151
How does mobile safari determine when to prompt the user to share location in HTML?
Mobile Safari determines when to prompt the user to share location based on specific browser behaviors and API usage patterns. The location prompt appears when your web application calls the Geolocation API methods for the first time on a domain. When Safari Shows Location Prompts Safari displays the location permission prompt in the following scenarios − First API call − When navigator.getCurrentPosition() or navigator.watchPosition() is called for the first time on a domain. User-initiated action − The request must be triggered by a user gesture (click, touch) for security reasons. HTTPS requirement − Location services only ...
Read MorePrevent iPhone from zooming in web-app with HTML
When developing web applications for iPhones, users often experience unwanted zooming behavior that can disrupt the user experience. This zooming typically occurs when users tap on form inputs or when the viewport settings are not properly configured. There are several effective methods to prevent this behavior while maintaining accessibility. Understanding iPhone Zoom Behavior iPhones automatically zoom into form elements when the font size is smaller than 16px. This is a built-in accessibility feature designed to help users read small text, but it can be problematic for web applications that need consistent viewport behavior. Method 1: Using Viewport ...
Read MoreConvert text to lowercase with CSS
To convert text to lowercase with CSS, we will be using the lowercase value of text-transform property. Syntax selector { text-transform: lowercase; } Example In this example, we are using text-transform property and displaying the result as before and after the conversion using p tag. #lcase { text-transform: lowercase; } ...
Read MoreHow to keep audio playing while navigating through pages?
To keep audio playing while navigating through pages, you need to prevent full page reloads that would interrupt playback. Here are the main approaches: Method 1: Using AJAX with History API Load new content dynamically without refreshing the page using AJAX combined with the History API's pushState() method. Continuous Audio Example ...
Read MoreArrayBuffer.byteLength Property in JavaScript
ArrayBuffer object in JavaScript represents a fixed-length binary data buffer. The byteLength property of the ArrayBuffer returns an unsigned, 32-bit integer that specifies the size/length of the ArrayBuffer in bytes. Syntax arrayBuffer.byteLength Return Value Returns a number representing the length of the ArrayBuffer in bytes. This value is established when the ArrayBuffer is constructed and cannot be changed. Example: Basic Usage JavaScript ArrayBuffer Example var arrayBuffer = new ArrayBuffer(8); ...
Read MoreHow to set the cases for a text in CSS?
The text-transform property in CSS allows you to control the capitalization of text without modifying the original HTML content. This property is particularly useful for styling headings, navigation links, and other text elements consistently across your website. Syntax text-transform: none | capitalize | uppercase | lowercase | initial | inherit; Property Values The text-transform property accepts the following values: none - No transformation (default value) capitalize - First letter of each word is capitalized uppercase - All letters are converted ...
Read MoreArrayBuffer.slice() function in JavaScript
The ArrayBuffer object in JavaScript represents a fixed-length binary data buffer. The slice() method creates a new ArrayBuffer containing a copy of the specified portion of the original buffer. Syntax arrayBuffer.slice(start, end) Parameters start (optional): The byte index where the slice begins (inclusive). Defaults to 0. end (optional): The byte index where the slice ends (exclusive). Defaults to buffer length. Return Value Returns a new ArrayBuffer containing the copied bytes from the specified range. Example: Basic ArrayBuffer Slicing ArrayBuffer Slice Example ...
Read MoreCross origin HTML does not load in Google Chrome
When loading HTML content from a different origin in Google Chrome, you may encounter CORS (Cross-Origin Resource Sharing) errors. This happens because browsers enforce the same-origin policy for security reasons. Common Cross-Origin Issues Cross-origin problems typically occur when: Loading resources from different domains Using different protocols (HTTP vs HTTPS) Different ports on the same domain Missing proper CORS headers Solution 1: Setting crossorigin for Video Elements For video elements that fail to load cross-origin content, set the crossorigin attribute to "anonymous": Cross-Origin Video ...
Read MoreAtomics.isLockFree() function in JavaScript
The Atomics object in JavaScript provides atomic operations for use with SharedArrayBuffer objects in multi-threaded environments. The Atomics.isLockFree() method determines whether the JavaScript engine can perform atomic operations on a given byte size without using locks. This method helps optimize performance by checking if atomic operations are lock-free for specific data sizes, which is crucial for high-performance concurrent programming. Syntax Atomics.isLockFree(size) Parameters size: An integer representing the size in bytes. Valid values are typically 1, 2, 4, or 8 bytes corresponding to Int8, Int16, Int32, or BigInt64 array types. Return Value ...
Read MoreEnhance real-time performance on HTML5 canvas effects
HTML5 canvas performance optimization is crucial for smooth real-time effects like animations, games, and interactive graphics. Here are proven techniques to boost your canvas rendering speed. Disable Image Smoothing Turn off image smoothing for pixel-perfect rendering and better performance: const canvas = document.getElementById('canvas'); const ctx = canvas.getContext('2d'); // Disable smoothing for better performance ctx.imageSmoothingEnabled = false; ctx.webkitImageSmoothingEnabled = false; ctx.mozImageSmoothingEnabled = false; // Test with a small image scaled up const img = new Image(); img.onload = function() { ctx.drawImage(img, 0, 0, 200, 150); ...
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