// Create a variable.js file and declare variables and assign string, boolean, undefined and null data types let fullName = "John Doe"; let ageNow = 50; let isDivorced = true; let car = undefined; let kids = null; console.log( typeof "fullName", typeof ageNow, typeof isDivorced, typeof car, typeof kids ); let fruit = null; let vegetable = null; let fish = null; let meat = null; console.log(fruit, vegetable, fish, meat); let carModel = "Toyota"; let yearMade = 2019; let price = 100000; let color = "red"; console.log(carModel, yearMade, price, color); let nameFirst = "Daniel"; let nameLast = "Fernandez"; let countryOfOrigin = "Spain"; let currentAge = 35; let maritalStatus = "single"; let name1 = "John", name2 = "Doe", ethnicity = "Indian", personAge = 50, marriageStatus = "married"; console.log(nameFirst, nameLast, countryOfOrigin, currentAge, maritalStatus); console.log(name1, name2, ethnicity, personAge, marriageStatus); // Array creation let details = [ (nameFirst = "John"), (nameLast = "Doe"), (countryOfOrigin = "USA"), (currentAge = 50), (maritalStatus = "single"), ]; console.log(details); const myAge = 35; const yourAge = 50; console.log(`I am ${myAge} years old. and you are ${yourAge} years old.`);