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Generally speaking, Modernizr does three things. It adds classes indicating feature support, allowing you to apply different styling to elements depending on what features they support. It allows you to run feature detection to decide whether to run a script/run a polyfill or not.
The Modernizr bundle included in the tools may be out of date, but the library itself is still receiving updates. The last release was 3 months ago, which, while not exactly recent in web development terms, is certainly more recent than 2017.
You don’t need Modernizr just to style new tags in older browsers. That said, it is OK to include Modernizr with Twitter Bootstrap. You can even get an auto-generated H5BP template with Bootstrap and Modernizr included at Initializr.
- In order to perform feature detection with Modernizr, you need to add the Modernizr. …
- Now include the downloaded Modernizr file in the section of your page. …
- Add “no-js” class to the
- Modernizr adds several CSS classes on the root
|Web SQL Database||.websqldatabase||Modernizr.websqldatabase|
Modernizr uses feature detection, rather than checking the browser’s property, to discern what a browser can and cannot do. It considers feature detection more reliable since the same rendering engine may not necessarily support the same things in two different browsers using that engine.
With CSS, you can control the color, font, the size of text, the spacing between elements, how elements are positioned and laid out, what background images or background colors are to be used, different displays for different devices and screen sizes, and much more!
Respond. js is a polyfill for CSS min-width and max-width media queries. It is extremely lightweight (3kb minified / 1kb gzipped) and that ensures that the script is downloaded and ran as quickly as possible. There are two steps to include Respond. js into your project.
HTML5 is designed, as much as possible, to be backward compatible with existing web browsers. New features build on existing features and allow you to provide fallback content for older browsers.
- window. localStorage – stores data with no expiration date.
- window. sessionStorage – stores data for one session (data is lost when the browser tab is closed)
- Intro of audio and video: Audio and Video tags are the two major addition to HTML5. …
- Nav tag: The
Web Workers allow for long-running scripts that are not interrupted by scripts that respond to clicks or other user interactions, and allows long tasks to be executed without yielding to keep the page responsive.
The concept of feature detection The idea behind feature detection is that you can run a test to determine whether a feature is supported in the current browser, and then conditionally run code to provide an acceptable experience both in browsers that do support the feature, and browsers that don’t.
Since the value in the function is not enclosed in double inverted commas, therefore its output will be the value of 11+3 which is 14.
D Explanation: It is true that a view can be created based on other views, and rows do can be inserted and deleted from a view.
Deprecated Attributes Some attributes from HTML4 are no longer allowed in HTML5 at all and they have been removed completely. img and iframe. caption, iframe, img, input, object, legend, table, hr, div, h1, h2, h3, h4, h5, h6, p, col, colgroup, tbody, td, tfoot, th, thead and tr.
Answer: Client Side storage: In HTML4, in order to store important data on client side, browser’s cache was used.
- Developers insert a script tag into their page, which loads the polyfill service endpoint.
- The service analyses the browser’s user-agent header and a list of requested features (or uses a default list of everything polyfillable) and builds a list of polyfills that are required for this browser.
At best, polyfills are hard to implement and complicate matters by intertwining browser and application logic. This complexity is costly. At worst, polyfills have caveats and gaps that cause pain for the developer and broken experiences for users.
In Angular 2, the polyfills. ts file is used to make user application compatible for various browsers. The code we write in Angular 2 is mostly in ES6, which is not compatible with Firefox or IE, and requires few environmental setups before they wither get viewed or used in browsers.
- Place the type definition of Modernizr into your project folder.
- Place the modernizr. js in your project and access it within any component using relative path like: import ‘./Lib/modernizr. js’;
Using CSS for layout. CSS just doesn’t work for email layout. Most email clients do not support CSS layout or will break your CSS layout—each in its own unique way. HTML tables may be old school, but they produce emails that look good across devices, and they are really the only way to go for email layout.
This feature is non-standard and should not be used without careful consideration.
CSS helps you to keep the informational content of a document separate from the details of how to display it. The details of how to display the document are known as its style. You keep the style separate from the content so that you can: Avoid duplication.