JavaScript Basics

JavaScript Basics - Important Points

A. To define a new variable.

B. To execute a block of code and catch any errors that might occur.

C. To create a loop.

D. To exit a function.

A. There is no difference between a for loop and a while loop.

B. A for loop is used for counting and iterating over a range of values, while a while loop is used for executing a block of code while a condition is true.

C. A while loop is used for counting and iterating over a range of values, while a for loop is used for executing a block of code while a condition is true.

D. A for loop is used for executing a block of code while a condition is true, while a while loop is used for counting and iterating over a range of values.

A. There is no difference between synchronous and asynchronous programming.

B. Synchronous programming executes code in a single thread, while asynchronous programming allows for code to be executed in multiple threads.

C. Synchronous programming executes code one line at a time, while asynchronous programming allows for code to be executed out of order.

D. Synchronous programming executes code in a predetermined order, while asynchronous programming allows for code to be executed out of order.

A. To refer to the global object.

B. To refer to the parent object.

C. To refer to the child object.

D. To refer to the current object.

A. string

B. number

C. object

D. null