1. Make all countries in the following array follow the same formatting: // The first letter should be upper case, the rest lower case. Print the // result to the console.

var countries = ["AustraliA", "greece", "PERU", "ChInA"];

// 2. Get every second and third letter from each country and concatenate them. // Print the results to the console.

// 3. In the sentence below replace 'dart' with 'arrow' by using the indexOf // and slice functions.

java script