How do you loop through an array in JavaScript?

In JavaScript, there are several ways to loop through an array, depending on what you want to achieve.

Here are some common methods:

1. For loop:

   A for loop is a basic loop that allows you to iterate through an array using an index.

   For example:

   const array = [1, 2, 3, 4, 5];
   for (let i = 0; i < array.length; i++) {
     console.log(array[i]);
   }

2. For…of loop:

   A for...of loop is a newer loop introduced in ES6 that allows you to iterate through an array without using an index.

   For example:

   const array = [1, 2, 3, 4, 5];
   
   for (let value of array) {
     console.log(value);
   }

3. forEach method:

   The forEach method is a built-in method of an array that allows you to iterate through an array and execute a function for each element.

   For example:

   const array = [1, 2, 3, 4, 5];
   array.forEach(function (value) {
     console.log(value);
   });

4. map method:

   The map method is another built-in method of an array that allows you to iterate through an array and create a new array based on the original array.

   For example:

   const array = [1, 2, 3, 4, 5];
   
   const newArray = array.map(function (value) {
     return value * 2;
   });
   
   console.log(newArray);

5. while loop:

   The while loop creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated before executing the statement.

   For example:

   let n = 1;
   
   while (n <= 5) {
     console.log(n);
     n++;
   }