**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. 



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

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

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

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

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

<table border="1" cellpadding="8" cellspacing="0">
  <thead>
    <tr>
      <th>Operator</th>
      <th>Function</th>
      <th>Usage</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>===</td>
      <td>A is strictly equal to B</td>
      <td>A === B</td>
    </tr>
    <tr>
      <td>!==</td>
      <td>A is strictly not equal to B</td>
      <td>A !== B</td>
    </tr>
    <tr>
      <td>&lt;</td>
      <td>A is less than B</td>
      <td>A &lt; B</td>
    </tr>
    <tr>
      <td>&gt;</td>
      <td>A is greater than B</td>
      <td>A &gt; B</td>
    </tr>
    <tr>
      <td>&lt;=</td>
      <td>A is less than or equal to B</td>
      <td>A &lt;= B</td>
    </tr>
    <tr>
      <td>&gt;=</td>
      <td>A is greater than or equal to B</td>
      <td>A &gt;= B</td>
    </tr>
  </tbody>
</table>

The video demonstrates the usage of these operators in detail:

What will be the output of the following code?

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

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

Which of the following statements will return `true` ?

In this section, we will get an introduction to JavaScript by looking at the basic syntax of the language, along with a few terms and concepts which will build our foundation for learning more advanced features of the language in the upcoming section. This section will include hands-on tasks which will help you practice all the concepts and remember the contents naturally without effort.

In this section, we will look at how to store some data and retrieve it later on using Variables. Moreover, we will explore some basic data types and look at how they interact with each other.

In this chapter we will look at how to write expressions which evaluate to "true" or "false" based on the conditions, for example "Is X equal to Y?". Afterwards, we will build on that concept and learn to write "Conditional Statements" which will enable us to conditionally execute specific lines of code.

Introduction to JavaScript

Comparison Operators

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` ?