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Articles by Ankith Reddy
Page 17 of 73
Passing mouse clicks through an overlaying HTML element
When you have an overlaying HTML element that blocks mouse clicks to elements beneath it, you can pass clicks through using CSS or JavaScript techniques. Method 1: Using CSS pointer-events The simplest approach is to use the CSS pointer-events property to make the overlay non-interactive: .overlay { pointer-events: none; } Example: CSS pointer-events .overlay { position: absolute; ...
Read MoreHow to indicate whether the marker should appear inside or outside of the box containing the bullet points with CSS?
The list-style-position property controls whether list markers (bullets, numbers) appear inside or outside the content area of list items. This property is particularly important when list items contain long text that wraps to multiple lines. Syntax list-style-position: inside | outside | initial | inherit; Values Value Description outside Default. Marker appears outside the content area. Text wraps align with the first line. inside Marker appears inside the content area. Text wraps underneath the marker. initial Sets to default value (outside) inherit ...
Read MoreDetecting HTML click-to-call support in JavaScript
The tel: protocol enables click-to-call functionality on mobile devices. Most modern browsers support it, but older devices may require different protocols or detection methods. Basic tel: Protocol Support Modern mobile browsers support the tel: protocol natively: Click to Call Example Call +1 (234) 567-890 // Check if tel: links are supported function isTelSupported() { ...
Read MorePlaying MP4 video in WebView using HTML5 in Android
To play MP4 videos in Android WebView using HTML5, you need to enable JavaScript, DOM storage, and configure proper video handling. This requires both Android configuration and HTML5 video implementation. Android WebView Configuration First, configure your WebView settings to support HTML5 video playback: // Enable JavaScript and DOM storage WebSettings webSettings = webView.getSettings(); webSettings.setJavaScriptEnabled(true); webSettings.setDomStorageEnabled(true); webSettings.setAllowFileAccess(true); webSettings.setAllowContentAccess(true); webSettings.setMediaPlaybackRequiresUserGesture(false); // Enable hardware acceleration webView.setLayerType(View.LAYER_TYPE_HARDWARE, null); HTML5 Video Implementation Create an HTML page with HTML5 video element to play MP4 files: ...
Read MoreGeolocation HTML5 enableHighAccuracy True, False or What?
The enableHighAccuracy property in HTML5 Geolocation API controls whether the device should use high-precision GPS or faster network-based location services. Syntax navigator.geolocation.getCurrentPosition( successCallback, errorCallback, { enableHighAccuracy: true, // or false timeout: 10000, maximumAge: 0 } ); enableHighAccuracy: true When set to true, requests the most accurate position possible, typically using GPS: ...
Read MoreHow to take a snapshot of HTML5-JavaScript based video player?
You can capture a still frame from an HTML5 video player by drawing the current video frame onto a canvas element. This technique is useful for creating thumbnails, implementing pause screens, or saving video snapshots. How It Works The process involves using the drawImage() method to copy the current video frame to a canvas. The canvas acts as a snapshot buffer that can be manipulated or saved. Example Your ...
Read MoreDetection on clicking bezier path shape with HTML5
To detect clicks on Bezier path shapes in HTML5 Canvas, you need to use pixel-based detection since Canvas doesn't have built-in shape hit testing. This technique draws the shape invisibly and checks if the clicked pixel contains color data. How Pixel-Based Detection Works The method involves drawing the Bezier shape to a hidden canvas context, then checking if the clicked coordinates contain any pixels. If the alpha channel is greater than 0, the click hit the shape. Complete Click Detection Example const canvas = document.getElementById('myCanvas'); const ctx = canvas.getContext('2d'); // Sample Bezier ...
Read MoreHTML5 File API readAsBinaryString reads files as much larger and different than files on disk
When using HTML5 File API's readAsBinaryString() method, the resulting binary string can appear much larger than the original file due to character encoding issues and inefficient string representation of binary data. The Problem with readAsBinaryString The readAsBinaryString() method converts binary data to a string format, which can cause size inflation and encoding problems. This is especially problematic when manually creating multipart/form-data requests. Recommended Solution: Use FormData with File Objects Instead of reading files as binary strings, use FormData with the original File objects. This preserves the file's binary integrity and size. ...
Read MoreHow to stop dragend's default behavior in drag and drop?
To stop dragend's default behavior in drag and drop operations, you need to use preventDefault() and detect if the mouse is over a valid drop target. Here are several approaches to handle this properly. Using preventDefault() Method The most straightforward way is to call preventDefault() in the dragend event handler: Drag me Drop here const dragItem = document.getElementById('dragItem'); const dropZone = document.getElementById('dropZone'); dragItem.addEventListener('dragend', function(event) { event.preventDefault(); console.log('Dragend default behavior prevented'); }); dragItem.addEventListener('dragstart', function(event) { event.dataTransfer.setData('text/plain', event.target.id); }); dropZone.addEventListener('dragover', function(event) ...
Read MoreHow to find the size of localStorage in HTML?
localStorage is used to persist information across multiple sessions. It has a maximum size of 5MB in most browsers and stores data as key-value pairs. Understanding localStorage Size Calculation Each character in localStorage is stored as UTF-16, taking 2 bytes. To calculate the size, we multiply the string length by 2 and convert to MB. Example: Calculate localStorage Size You can try to run the following code snippet to check the size allocated: localStorage Size Calculator localStorage Size Breakdown ...
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