Which technique is commonly used in JavaScript to dynamically create and add elements to the DOM?
A). Event handling
B). Conditional rendering
C). DOM manipulation
D). Data display and formatting
How can data display and formatting be achieved using JavaScript?
A). By handling database queries
B). By utilizing regular expressions
C). By formatting strings, dates, and numbers
D). By creating external APIs
How does JavaScript contribute to improving the user interface of web applications?
A). By reducing server load
B). By enhancing code organization
C). By optimizing database queries
D). By compressing and minifying code
What is the primary purpose of DOM manipulation in JavaScript?
A). Modifying the structure and content of HTML elements dynamically
B). Validating user input
C). Handling server-side operations
D). Creating external references
What is the primary purpose of animation and effects in JavaScript?
A). To enhance user experience
B). To improve code performance
C). To handle database queries
D). To compress and minify code
What is the purpose of conditional rendering in JavaScript?
A). To handle errors in code
B). To render content based on conditions
C). To manage external dependencies
D). To optimize database queries
How can JavaScript be utilized to format data such as dates and numbers?
A). By using external references
B). By manipulating the DOM
C). By defining regular expressions
D). By using built-in methods and functions
How does JavaScript contribute to creating visually appealing web interfaces?
A). By handling server-side operations
B). By utilizing CSS for styling
C). By compressing and minifying code
D). By optimizing database queries
How can JavaScript be used to handle user input validation on web forms?
A). By utilizing external APIs
B). By defining regular expressions
C). By executing server-side code
D). By creating event listeners
Which JavaScript feature is commonly used to optimize code performance and reduce load times on web pages?
A). Event handling
B). Asynchronous functions
C). External references
D). Code optimization techniques