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Front End Scripts Articles
Page 6 of 47
Do any browsers yet support HTML5's checkValidity() method?
Yes, modern browsers widely support HTML5's checkValidity() method. This method validates form elements against their HTML5 constraints and returns true if valid, false otherwise. Browser Support The checkValidity() method is supported in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. It's been widely supported since around 2012-2013. Syntax element.checkValidity() Return Value Returns true if the element meets all validation constraints, false otherwise. Example .valid { ...
Read MoreHow to return which part of a positioned element is visible in JavaScript?
This tutorial teaches us how to return which part of a positioned element is visible in JavaScript. A positioned element is an HTML element with CSS positioning (absolute, relative, fixed, etc.). To make only a defined part visible, we use the CSS clip property to hide unwanted areas. The clip property defines a rectangular clipping region that determines which portion of an absolutely positioned element should be visible. Syntax Here's the basic syntax for clipping an element and retrieving the clip value: document.getElementById("elementId").style.clip = "rect(top right bottom left)"; let clipValue = document.getElementById("elementId").style.clip; The ...
Read MoreHTML5+CSS3 Framework like BluePrint/960gs?
When looking for HTML5+CSS3 frameworks similar to Blueprint or 960gs, you have several modern alternatives that provide responsive grid systems and enhanced styling capabilities. Available Framework Options Here are two notable frameworks that extend beyond traditional grid systems: 52framework Susy 52framework The 52framework (Official Site) is a comprehensive HTML5+CSS3 framework that provides: CSS3 gradients, multiple shadows, and other advanced visual properties CSS3 selectors with Internet Explorer compatibility Enhanced HTML5 video support ...
Read MoreHow to set or return the number of columns an element should be divided into with JavaScript?
In JavaScript, the columnCount property allows you to divide an element's content into multiple columns. This CSS property can be set and retrieved using JavaScript's style object. Syntax // Set column count element.style.columnCount = "number"; // Get column count let count = element.style.columnCount; Parameters The columnCount property accepts: number - The number of columns (e.g., "2", "3", "4") "auto" - Browser determines column count automatically "initial" - Sets to default value Example: Setting Column Count Click the button to divide the text into 4 columns: ...
Read Morecache.manifest works for the first time then fails in HTML
HTML5 Application Cache (cache.manifest) can fail after the first load due to caching issues. Here are solutions to ensure proper cache updates. Add NETWORK Section Add the NETWORK section at the bottom of your manifest file to allow network access for unlisted resources: CACHE MANIFEST CACHE: /css/style.css /js/myscript.js /images/logo.png NETWORK: * Version Your Manifest File Include a version parameter in the manifest attribute to force cache updates when content changes: My App Cached Application ...
Read MoreSet whether or not an element should be visible while not facing the screen with JavaScript?
Use the JavaScript backfaceVisibility property to control whether an element should be visible when its back face is turned toward the viewer. This property is particularly useful with CSS 3D transforms and animations. Syntax element.style.backfaceVisibility = "visible|hidden|inherit|initial"; Property Values Value Description visible Default. Back face is visible when turned away from user hidden Back face is hidden when turned away from user inherit Inherits value from parent element Example: Interactive Backface Visibility Toggle The following example demonstrates how to toggle the backfaceVisibility ...
Read MoreHTML5 tag on Android for PhoneGap application
PhoneGap is a software development framework by Adobe System, which is used to develop mobile applications. PhoneGap produces apps for all popular mobile OS platforms such as iOS, Android, BlackBerry, and Windows Mobile OS etc. HTML5 Audio support is not consistent across different devices due to codec licensing issues and OS implementation. For playing MP3 files, this can be handled by using PhoneGap's Media class that provides reliable audio programming across all platforms. Using PhoneGap Media Class The Media class provides audio recording and playback functionality. Here's how to implement basic audio playback: // Create ...
Read MoreHow to set outline color with JavaScript?
To set outline color in JavaScript, use the outlineColor property. The outline appears outside an element's border and doesn't affect the element's dimensions or layout. Syntax element.style.outlineColor = "color"; Parameters The outlineColor property accepts any valid CSS color value: Color names: "red", "blue", "green" Hex values: "#FF5733", "#000000" RGB values: "rgb(255, 87, 51)" HSL values: "hsl(9, 100%, 60%)" Example: Setting Outline Color #box { ...
Read MoreHTML5 appcache with Safari causing cross-site css to not load correctly
HTML5 AppCache was designed to enable offline web applications by caching specific resources. However, Safari's strict implementation can cause cross-site CSS files to fail loading when not properly configured in the cache manifest. The Safari AppCache Issue Safari follows the AppCache standard more strictly than other browsers. When a cache manifest is present, Safari blocks any network requests to resources not explicitly listed in the manifest file, including cross-site CSS files. Understanding the Problem When you have a cache manifest like this: CACHE MANIFEST # Version 1.0 CACHE: /styles/main.css /scripts/app.js /index.html ...
Read MoreHow to set all outline properties in a single declaration with JavaScript?
To set all outline properties in one declaration, use the outline property. It sets the following properties: outline-width, outline-style, and outline-color. Syntax element.style.outline = "width style color"; Parameters The outline property accepts three values in any order: width - thickness (thin, medium, thick, or length value like 2px) style - line style (solid, dashed, dotted, double, groove, ridge, inset, outset) color - outline color (color name, hex, rgb, rgba) Example You can try to run the following code to learn ...
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