HTML :
Q: What is HTML?
HTML stands for a hypertext markup language. It is the standard markup language used for creating web pages and structuring the content within a web page.
Q: What does HTML stand for?
HTML stands for Hypertext Markup Language.
Q: What is the purpose of HTML?
HTML is used to structure the content of a web page and define its layout and presentation.
HTML stands for a hypertext markup language. It is the standard markup language used for creating web pages and structuring the content within a web page.
Q: What does HTML stand for?
HTML stands for Hypertext Markup Language.
Q: What is the purpose of HTML?
HTML is used to structure the content of a web page and define its layout and presentation.
Q4: What is the basic structure of an HTML document?
An HTML document starts with a doctype declaration by the <html>
element, which contains the <head> and <body> sections.
Q: What is the difference between HTML and CSS?
HTML is used for structuring the web page's content, while CSS
(Cascading style sheet) is used for describing the presentation and
layout of the HTML elements.
Q: What is the role of the <head> section in an HTML
document?
The <head> section contains metadata about the document, such as
the title, character encoding, linked stylesheets, and scripts.
Q: What is the purpose of the `<DOCTYPE>` declaration in
HTML?
The `<!DOCTYPE>` declaration specifies the version and type of HTML being used in the document. It helps the browser understand how to interpret the HTML code and render the web page correctly.
The `<!DOCTYPE>` declaration specifies the version and type of HTML being used in the document. It helps the browser understand how to interpret the HTML code and render the web page correctly.
Q: What is the purpose of the alt attribute in the <img> tag?
The alt attribute provides alternative text for an image, which is
displayed if the image cannot be loaded or for accessibility purposes.
Q: How do you create a Hyperlink in HTML?
You can create a hyperlink using the <a> (anchor) tag with the
href attribute, like this:
`<a href="https://www.example.com">Link </a>`.
Q: What are semantic HTML tags?
Semantic HTML tags are elements that carry meaning and describe the
structure of the content. Examples include <header>, <nav>,
<article>, <section>, <footer>, etc.
Q: What is the purpose of the <div> tag?
The <div> tag is a generic that is used to group and style other
elements or sections of a web page.
Q: How do you add a comment in HTML?
You can add a comment in HTML using the <!--comment goes here-->
syntax.
Q: What is the difference between inline elements and block-level
elements in HTML?
Inline elements do not start on a new line and only take up as much
width as necessary, while block-level elements start on a new line and
take up the full width available.
Q: What are the new features in HTML5?
HTML5 introduced serval new features such as semantic elements
(header, footer, article, section, etc.), audio and video support,
canvas for drawing graphics, local storage, geolocation, and more.
HTML5 is the latest version of HTML, and it introduces new elements,
attributes, and APIs compared to the previous version. It provides. It
provides better support for multimedia, improved semantic elements,
and enhanced browser compatibility. Detail
CSS :
Q: What is CSS?
CSS stands for cascading style sheets and is a stylesheet language
used to describe the presentation and layout of HTML documents.
Q: How do you select the element with the class "example" in CSS?
You can select an element with a class example using the class
selector: `.example`.
Q: What is the difference between the padding and margin in CSS?
Padding is the space inside an element between the elements and
the content and its border, while the margin is the space outside
the element creating separation from other elements.
JAVASCRIPT :
Q: What is JavaScript?
JavaScript is a high-level, interpreted programming language
primarily used for adding interactivity and dynamic behavior to
web pages. It is supported by all modern web browsers.
Q: What is a variable in JavaScript?
A variable is a named container that stores a
value. It is used to store and manipulate data within a
program.
Q: How do you declare a variable in JavaScript?
You can declare a variable using the `var`, `let`, or `const` keywords, followed by the variable name. For example: `var x;` or `let name;`.
You can declare a variable using the `var`, `let`, or `const` keywords, followed by the variable name. For example: `var x;` or `let name;`.
Q: What is a function in JavaScript?
A function is a reusable block of code that performs a specific task. It allows you to group code, provide input parameters, and return a value.
A function is a reusable block of code that performs a specific task. It allows you to group code, provide input parameters, and return a value.
Q: What are the different data types in JavaScript?
JavaScript has several built-in data types, including, numbers,
strings, booleans, objects, arrays, and null/undefined.
Q: What is the difference between `null` and `undefined` in
JavaScript?
`null` represents the international absence of any object value,
while `undefined` typically represents an uninitialized variable
or a missing property. `null` is a value that can be assigned to a
variable, whereas `undefined` is a type on its own.
Q: What is the difference between `let` and `const`?
- `let` allows variable reassignment, while `const` declares a read-only variable that cannot be reassigned.
- `let` has block-level scope, while `const` also has block-level scope but is used for variables that are not intended to be reassigned.
- `let` allows variable reassignment, while `const` declares a read-only variable that cannot be reassigned.
- `let` has block-level scope, while `const` also has block-level scope but is used for variables that are not intended to be reassigned.
Q: How do you write a comment in JavaScript?
Single-line comments start with `//`, while multi-line comments are enclosed between `/*` and `*/`. Comments are used to add notes or explanations to the code.
Single-line comments start with `//`, while multi-line comments are enclosed between `/*` and `*/`. Comments are used to add notes or explanations to the code.
Q: What is string interpolation in JavaScript?
String interpolation is the process of embedding variables or expressions within a string. It can be done using template literals (enclosed in backticks) with placeholders `${}`. For example:
Code:
let name = 'John'; console.log(`Hello, ${name}!`);
Q: What is the purpose of the `return` statement in a function?
The `return` statement is used to specify the value
to be returned from a function. It is used to exit the function
and return a value to the caller.
Q: How do you check the type of a variable in JavaScript?
You can check the type of a variable using the `typeof` operator. For example: `typeof x;`. It returns a string representing the data type of the variable.
You can check the type of a variable using the `typeof` operator. For example: `typeof x;`. It returns a string representing the data type of the variable.
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