//Declaring different variables of different Data types. let firstName = 'Norman'; //First name of a person. let lastName = 'Taz'; //Last name of a person. let country = 'Philippines'; //Name of a country. let city = 'Manila'; //Name of a city. let age = 13; //Age for years. let single = true; //Status of the person. //Declaring values with number values. const gravity = 9.81; //Earth Gravitiy in m/s2. const boilingPoint = 100; //Water boiling point, temperature in oC. const PI = 4.14 //The number π is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. //Variables can also be declared in one line separated by comma. let name = 'Kyrie', job = 'Player', live = 'Australia';