JavaScript is capable of manipulating the content part(HTML) as well as the presentation part(CSS), and hence, it is the powerful master of the web.
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JavaScript frameworks provide simplified structure to complex commands in the form of simple blocks of JavaScript code, thereby making the process of programming easier and faster.
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Today the process of software development is primarily composition: breaking down complex problems into smaller problems, and solving the smaller problems which are finally combined to get the complete solution in the form of your application.
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HTML is actually not a programming language, but it is a markup language. Markup languages are designed for the definition, presentation, and processing of text.
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The HTML content comprises three building blocks
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HTML elements: HTML elements are the building blocks of any HTML web page.
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HTML Tags: An HTML tag surrounds the content to be displayed and applies a special meaning to it.
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: This is an empty tag which introduces a line break. : This is another empty tag which draws a horizontal line on the screen.
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HTML attributes: HTML attributes are special properties attached to the HTML elements to impact their behavior.
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The HTML page is like a tree structure with each element forming a node of the tree and different nodes having a parent-child relationship between them starting from the root node (HTML).