The `while` loop is a type of loop that allows you to repeat a block of code as long as a specified condition is `true`. The syntax of a `while` loop in JavaScript is:

```javascript
while (condition) {
  // code to be executed while the condition is true
}
```

The loop will continue to run as long as the `condition` is `true`. Once the `condition` becomes `false`, the loop will exit, and the program will move on to the next line of code.

Here's an example of a simple `while` loop that counts from 1 to 5:

```javascript
let count = 1;
while (count &lt;= 5) {
  console.log(count);
  count++;
}
```

In this example, the loop will run as long as `count` is less than or equal to `5`. The `console.log()` statement inside the loop will print the current value of `count`, and then `count` will be incremented by `1` using the` count++` statement.

The output of this code will be:

```javascript
1
2
3
4
5
```

It's important to be careful when using a `while` loop, as it can potentially result in an **infinite loop**. An **infinite loop** is a loop that never exits because the condition is always `true`. This can cause your program to crash or become unresponsive. To avoid **infinite loops**, always make sure that the condition in your `while` loop eventually becomes `false`.

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In the exercises below, you'll practice using the `while` loop.

You can see a `while` loop with numbers from 1 to 10. Your mission is to use the `console.log()` method to print the even numbers.

While Loop