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JavaScript Essentials for Beginners - 1768407374405

bookThe `else` Clause

Conditional Statements have an optional else clause which can be used to specify a block of code to be executed in case the boolean expression evaluates to false.

The syntax is as follows:

if(boolean_expression)
{
  // Code to execute if boolean_expression is true
}
else 
{
  // Code to execute if boolean_expression is false
}

This way we don't need to write multiple if-statements to check for opposite conditions, making the code shorter and neater.

1234567
let age = 18; if(age >= 18) { console.log("The user is old enough to drive."); } else { console.log("The user is not old enough to drive"); }
copy

In the code above, we simply used an else block instead of rewriting a separate if-statement.

1. What is the purpose of the else clause in an if-else statement?

2. What will be the output of the following code?

3. What happens if the if condition evaluates to true?

question mark

What is the purpose of the else clause in an if-else statement?

Select the correct answer

question mark

What will be the output of the following code?

Select the correct answer

question mark

What happens if the if condition evaluates to true?

Select the correct answer

Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 1. Capitolo 36

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bookThe `else` Clause

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Conditional Statements have an optional else clause which can be used to specify a block of code to be executed in case the boolean expression evaluates to false.

The syntax is as follows:

if(boolean_expression)
{
  // Code to execute if boolean_expression is true
}
else 
{
  // Code to execute if boolean_expression is false
}

This way we don't need to write multiple if-statements to check for opposite conditions, making the code shorter and neater.

1234567
let age = 18; if(age >= 18) { console.log("The user is old enough to drive."); } else { console.log("The user is not old enough to drive"); }
copy

In the code above, we simply used an else block instead of rewriting a separate if-statement.

1. What is the purpose of the else clause in an if-else statement?

2. What will be the output of the following code?

3. What happens if the if condition evaluates to true?

question mark

What is the purpose of the else clause in an if-else statement?

Select the correct answer

question mark

What will be the output of the following code?

Select the correct answer

question mark

What happens if the if condition evaluates to true?

Select the correct answer

Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 1. Capitolo 36
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