Modern Web Design with HTML5, CSS3, and JavaScript - Immediately Invoked Function Expression (IIFE) JavaScript Function

The video tutorial explains self-invoking functions in JavaScript, also known as Immediately Invoked Function Expressions (IIFE). It covers how to create and invoke these functions, emphasizing their role in maintaining variable privacy and preventing global scope pollution. The tutorial provides examples to illustrate the concept and highlights the benefits of using IIFE in JavaScript programming.

What is the primary purpose of using self-invoking functions in JavaScript libraries?

• To make the code run faster

• To keep variables within a local scope

• To increase the size of the code

• To make the code more readable

Which of the following is necessary to invoke a self-invoking function?

• Using rounded brackets

• Using curly braces

• Using square brackets

• Using angle brackets

What does IIFE stand for in JavaScript?

• Immediately Invoked Function Expression

• Internally Invoked Function Expression

• Instantly Invoked Function Execution

• Immediately Invoked Function Execution

How does a self-invoking function help with variable scope?

• It prevents variables from being accessed outside the function

• It makes all variables global

• It duplicates variables for safety

• It deletes all variables after execution

What is the benefit of using template literals in JavaScript?

• They allow for easier string interpolation

• They reduce the size of the code

• They make the code run faster

• They increase the security of the code

In the context of self-invoking functions, what is the significance of passing parameters?

• It allows the function to modify global variables

• It enables the function to accept external values

• It makes the function run indefinitely

• It prevents the function from executing

What is the output when a self-invoking function is correctly invoked with a parameter 'Lawrence'?

• The console shows an error

• The console displays 'undefined'

• The console remains empty

• The console outputs 'my name is Lawrence'