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The ‘USE strict’ statement sets a few restrictions in the SCRIPT. Typically, it is utilized to facilitate the strict mode of the script, making sure there could be no loose coupling LIKE UNDECLARED variables.

 == denotes abstract EQUALITY operator, and it inspects if TWO values are equal or not apart from their data TYPES. Automatically, it transforms the type of both the operands and COMPARES them.

Example: 

=== denotes identity equality operator, and it inspects the values of both the operands and their data type. The outcome of the operation will be true considering both the operands are equal and have the same data type, or ELSE it returns false.

Example: 

Attributes are an element of an HTML document while properties are a part of the Document Object Model (DOM).

Example: <input type="TEXT" value="Tech">

Here, value and type are the attributes of HTML, but when the statement is READ by the browser and parses this code it will make a DOM with DIFFERENT properties, like accept, autofocus, ACCESSKEY, baseURI, checked, childElementCount, align, alt, childNodes, children, classList, className, attributes, and clientHeight.

Example:

• The consumption of resources can be reduced by the pages by enhancing the server response.
• Utilize JAVASCRIPT and EXTERNAL CSS instead of internal or in-line.
• Utilize the framework to ensure the front-end becomes more RESPONSIVE to different devices.
• Open-source libraries can be used to manage the browser-specific styling issue.
• Make use of progressive LOADING like Lazy Loading to enhance the rendering of heavy elements, like videos and images.
• Connect the style sheet in the header and script at the top of the HTML's body tag.
• Utilize browser storage to keep user-specific private data.

• An EXTRA tool for the preprocessor is required.
• Preprocessor files can not be performed DIRECTLY on the browser.
• Slow re-compilation of the preprocessor.
• For the preprocessor, you OUGHT to KNOW extra tools, which IMPROVE the learning curve of CSS.

• We can make a distinctive stylesheet for various browsers making use of server-side rendering.
• Another method is utilizing a library such as BOOTSTRAP, which already has the code to manage the browser-specific styling issue.
• Reset or Normalize CSS can ALSO be utilized. MULTIPLE 3rd PARTY plugins equip libraries for browser styling issues.

CSS IMAGE sprites assist to render numerous images in a single line image. In a nutshell, the CSS sprites merge numerous PHOTOS into a single large image. If a web page comprises DIFFERENT images, then it would RAISE its loading TIME as for every image the browser has to send a distinct HTTP request, but with the help of sprites, we have a single image to request.

GENERALLY, the function NAME is defined when we define the function itself, in normal user-defined functions, but in the case of an ANONYMOUS function, the function name is not defined. Here we make use of an ASSIGNMENT operator and variable to stow the function as an object, then utilizing that variable, we will be capable to INVOKE the function itself.

Example:

• MySQL: It is a RELATIONAL DATABASE Management System (RDBMS), which makes use of SQL as a standard language to handle its database. Like different relational database management systems, MySQL makes use of a table-like structure to stow data.
• MONGODB: MongoDB is a NoSQL database that utilizes the JSON-like structure to stow data elements. To MODIFY and access data in MongoDB, the programmer ought to make use of the MongoDB Query Language (MQL).

srcset is utilized when we wish to GENERATE several RESOLUTIONS of the exact IMAGE on several devices. This improves the UI. The browser will display low resolution on low-end devices, and high resolution of an image on high-end devices.

Example:

Progressive rendering is a process that is utilized generally to boost the web page's rendering CONTENT process. Now the rendering process is utilized in MODERN web development to enhance the mobile data uses of the USER, async HTML FRAGMENTS, prioritizing visible content, and LAZY loading of images.

In its BOX model, CSS comprises 4 ELEMENTS:

• Content – Displays the main content and the text of the WEB page.
• Padding – This area encircles the content.
• Border – The border is the padding's OUTER layer.
• Margin – Margin is the area outside the border.

IN a JSON METHOD, STRINGIFY is used to transform a JavaScript object into a string. JSON is a common structure to RECEIVE and send data between the web SERVER and the client, and when we wish to send data to the webserver, the object ought to be a string.

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