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JavaScript Essentials for Beginners - 1768407374405

bookComparison Operators

Note
Definition

Comparison Operators, as expressed by the name, are operators that can be used for comparing data.

For example, we can use the equals to (==) operator to check if two values are equal. This outputs true or false based on whether the two values are equal or not.


              
123

            
let a = 5;
let b = 10;
console.log(a == b);
copy

The expression a == b is known as a boolean expression because it evaluates into a boolean value (true or false).

Note
Note

The equals to operator (==) is not the same as the assignment operator (=).

There's a similar operator known as the not equals to (!=) operator. It simply returns true if the two values are not equal:


              
123

            
let a = 5;
let b = 10;
console.log(a != b);
copy

There are some other operators which can be used for comparing values:

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

2. Which of the following operators checks if two values are equal?

3. What is the difference between = and == in JavaScript?

4. What will be the output of this code?

5. Which of the following statements will return true ?

question mark

What will be the output of the following code?

Select the correct answer

question mark

Which of the following operators checks if two values are equal?

Select the correct answer

question mark

What is the difference between = and == in JavaScript?

Select the correct answer

question mark

What will be the output of this code?

Select the correct answer

question mark

Which of the following statements will return true ?

Select all correct answers

Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 1. Capitolo 30

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bookComparison Operators

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Note
Definition

Comparison Operators, as expressed by the name, are operators that can be used for comparing data.

For example, we can use the equals to (==) operator to check if two values are equal. This outputs true or false based on whether the two values are equal or not.


              
123

            
let a = 5;
let b = 10;
console.log(a == b);
copy

The expression a == b is known as a boolean expression because it evaluates into a boolean value (true or false).

Note
Note

The equals to operator (==) is not the same as the assignment operator (=).

There's a similar operator known as the not equals to (!=) operator. It simply returns true if the two values are not equal:


              
123

            
let a = 5;
let b = 10;
console.log(a != b);
copy

There are some other operators which can be used for comparing values:

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

2. Which of the following operators checks if two values are equal?

3. What is the difference between = and == in JavaScript?

4. What will be the output of this code?

5. Which of the following statements will return true ?

question mark

What will be the output of the following code?

Select the correct answer

question mark

Which of the following operators checks if two values are equal?

Select the correct answer

question mark

What is the difference between = and == in JavaScript?

Select the correct answer

question mark

What will be the output of this code?

Select the correct answer

question mark

Which of the following statements will return true ?

Select all correct answers

Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

Sezione 1. Capitolo 30
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