Questionnaire

Friends, Cascading Style Sheets are the files in which properties and their corresponding values are written which is essential for HTML document to have a great USER-EXPERIENCE and RESPONSIVE-DESIGN that is, a website-project which provides a distinct features of a complete website section-wise with PHOTOGRAPHS and TEXTS.

I'm very sooner starts my journey where you will see the importance of HTML/CSS/JAVASCRIPT to built your Website(Webpage(s)) or Web-Application.

Screen sizes and resolutions vary widely by device type and manufacturer. The actual physical size (in inches, cm, or mm) combined with the pixel resolution determines the pixel density and sharpness of the image. 

Common Screen Sizes and Resolutions

Below are typical ranges for screen sizes and their corresponding standard pixel resolutions (width × height). Physical dimensions (cm/mm) are approximate and depend on the specific aspect ratio and manufacturer. 

Note: Mobile devices often use high physical pixel counts but render websites at lower, more readable "viewport" resolutions (CSS pixels) due to pixel density scaling. The values in bold are the most common in their category. 

Standard Media Queries for Responsive Design 

Developers use CSS media queries to adapt layouts to different screen sizes. These typically target the viewport width in pixels (px). Common breakpoints include: 

• Extra small devices (phones): Up to 640px.

  css

  @media only screen and (max-width: 640px) {
    /* CSS styles for small phones (portrait) */
  }
  

• Small devices (tablets, large phones): 641px to 1007px.

  css

  @media only screen and (min-width: 641px) and (max-width: 1007px) {
    /* CSS styles for tablets (portrait/landscape) */
  }
  

• Medium devices (laptops, desktops): 1008px to 1200px or more.

  css

  @media only screen and (min-width: 1008px) {
    /* CSS styles for laptops and desktops */
  }
  

• Large devices (large desktops/TVs): 1200px and up.

  css

  @media only screen and (min-width: 1200px) {
    /* CSS styles for large screens */
  }
  

A fundamental approach is mobile-first, using min-width breakpoints to scale up from small screens. The viewport meta tag is also essential for correct mobile rendering: 

html

<meta name="viewport" content="width=device-width, initial-scale=1.0">

Screen sizes vary widely, so responsive design focuses on breakpoints (specific pixel widths) rather than individual device dimensions in inches/cm. The physical dimensions (inches/cm) for a given pixel resolution can vary drastically based on pixel density (PPI). 

Common Screen Resolutions and Approximate Sizes

The most common pixel resolutions for various device types are as follows. 

Standard Media Queries (CSS Breakpoints)

For responsive web design, you should use relative units and employ media queries at strategic breakpoints where the content or layout starts to look bad. The following are common, widely-used breakpoints, often in a mobile-first approach using min-width. 

• Extra Small devices (phones): up to 480px.

  /* Base styles for mobile devices */ body { font-size: 14px; }

• Small devices (portrait tablets/large phones): 481px to 768px.

  @media only screen and (min-width: 481px) { /* Styles for small tablets and larger phones */ }

• Medium devices (landscape tablets/laptops): 769px to 1024px.

  @media only screen and (min-width: 769px) {
    /* Styles for tablets in landscape and small laptops */
  }.

• Large devices (desktops): 1025px to 1200px.

  @media only screen and (min-width: 1025px) {
    /* Styles for desktops and large screens */
  }.

• Extra Large devices (large desktops/TVs): 1201px and up.

  @media only screen and (min-width: 1201px) {
    /* Styles for very large screens */
  }
  

John Resig created the jQuery library, which primarily simplifies common web development tasks and smooths out cross-browser inconsistencies. 

It is crucial to understand that jQuery does not offer any functionality that plain JavaScript cannot perform. Modern JavaScript (ES6+) can achieve everything jQuery does and more efficiently.

Here are some key areas where jQuery provided a significant advantage at the time of its creation, which modern JavaScript now handles natively:

• Simplified DOM Manipulation: jQuery introduced a concise, easy-to-use syntax for selecting and manipulating HTML elements. For example, selecting elements by their CSS selector is simple with $('mySelector') compared to the pre-ES6 JavaScript method document.querySelectorAll('mySelector').
• Cross-Browser Compatibility: At the time of its release, different browsers had wildly inconsistent APIs (Application Programming Interfaces). jQuery handled these inconsistencies under the hood, ensuring the same code worked across Netscape, Internet Explorer, Firefox, and others.
• Event Handling Abstraction: Binding and handling user events (like clicks or keypresses) was simplified with a unified syntax, such as $('selector').click(function() {}), abstracting away various browser-specific event models.
• AJAX (Asynchronous JavaScript and XML) Simplification: jQuery made asynchronous requests much easier with methods like $.ajax() and $.getJSON(). While modern JavaScript has superior APIs like fetch() and async/await, jQuery was revolutionary for its time.
• Animation and Effects: jQuery included built-in, easy-to-use animation capabilities like $.fadeIn() and $.slideUp(), which were complex to achieve with plain CSS or JavaScript alone at the time.

In summary, jQuery was a groundbreaking tool that made web development much more accessible and efficient during the era of browser fragmentation. Today, because modern web standards have matured and native browser APIs are robust, most developers prefer using plain JavaScript for better performance and smaller application sizes.