Finding the index

Exercise 1

Finding the index of the first even number:

Create an array of numbers.

Use findIndex() to find the index of the first even number.

Exercise 2

Finding the index of the first string starting with 'a':

Create an array of strings.

Use findIndex() to find the index of the first string that starts with 'a'.

Exercise 3

Finding the index of the first object with a specific property value:

Create an array of objects with properties like name and age.

Use findIndex() to find the index of the first object where age is greater than 30.