LESSON2-JAVASCRIPT

Question 1

offer simplicity and flexibility, making them suitable for a wide range of applications, from basic contact forms to complex data entry interfaces.

Answer 1

HTML Forms

Question 2

HTML provides a robust set of form elements, including input fields, buttons, checkboxes, radio buttons, dropdown menus, and text areas

Answer 2

HTML Forms

Question 3

is essential for ensuring that user input meets specified criteria before submitting data to a server.

Answer 3

Form Validation Using JavaScript

Question 4

display error messages or highlight invalid fields to guide users

Answer 4

Clear Feedback

Question 5

define validation rules for each form field, such as required fields or email formats

Answer 5

Custom Rules

Question 6

use JavaScript event handlers to trigger validation as users interact with fields

Answer 6

Event Handling

Question 7

Test validation across browsers to ensure consistent behavior.

Answer 7

Cross-Browser Compatibility

Question 8

utilize regex for precise validation, like checking emails or phone formats

Answer 8

Regular Expressions

Question 9

Implement ___________- as a fallback for security.

Answer 9

Server-Side Validation

Question 10

Optimize validation logic for efficient processing, especially in complex forms.

Answer 10

Performance Optimization

Question 11

Ensure error messages are accessible to all users.

Answer 11

Accessibility

Question 12

improves usability, data integrity, and user satisfaction in web applications.

Answer 12

JavaScript Form Validation

Question 13

• involves executing code within the user’s web browser. This code is downloaded along with the web page and runs on the client’s device.

Answer 13

Client-Side Scripting

Question 14

• The primary languages used for client-side scripting are ?, ? ,?.

Answer 14

HTML
CSS
JavaScript

Question 15

Advantages of Client-Side Scripting

Answer 15

Improved User Experience
Reduced Server Load
Instant Feedback

Question 16

Client-side scripting enables interactive and dynamic web pages, enhancing ________ through features like form validation, animations, and real-time updates.

Answer 16

Improved User Experience

Question 17

By offloading processing tasks to the client’s device, client-side scripting helps distribute the workload, reducing the burden on the server and improving overall system performance.

Answer 17

Reduced Server Load

Question 18

With client-side scripting, users receive immediate feedback without waiting for server responses, leading to faster interactions and smoother browsing experiences.

Answer 18

Instant Feedback

Question 19

Common Use Cases of Client-side Scripting

Answer 19

1. Form Validation
2. Dynamic Content Generation
3. User interface and user experience enhancements (e.g., dropdown menus, sliders)
4. Client-side storage (e.g., cookies, local storage)

Question 20

• involves executing code on the web server before delivering the resulting web page to the client’s browser.

Answer 20

Server-Side Scripting

Question 21

• Common server-side scripting languages include ?, ?, ?, ?.

Answer 21

PHP
Python
Ruby
Node.js.

Question 22

Advantages of Server-Side Scripting

Answer 22

Enhanced Security
Access to Server Resources
Platform Independence

Question 23

Server-side scripting allows sensitive operations and data processing to be performed on the server, reducing the risk of exposing critical code or data to users.

Answer 23

Enhanced Security

Question 24

Server-side scripting enables access to server resources like databases, file systems, and external APIs, facilitating complex operations and data manipulation.

Answer 24

Access to Server Resources

Question 25

Server-side scripts run independently of the client's device and browser, ensuring consistent behavior and compatibility across different platforms.

Answer 25

Platform Independence

Question 26

Common Use Cases of Server-side Scripting

Answer 26

1. User authentication and authorization 2. Database operations (e.g., CRUD operations) 3. Content Management Systems (e.g., WordPress)

Question 27

In HTML, JavaScript code is inserted between ________ tags either within the head and/or body sections of an HTML document.