Defining types

When we declare variables, we can optionally declare the types of variables. For instance:

name: string = 'Arvind'; 
age: number  = 99; 
isAlive: boolean = true; 
hobbies: string[]; 
anyType: any; 
noType = 50; 
noType = 'Random String';

This increases the predictability of what we are trying to do.