TypeScript Fundamentals

We can have spaces in object properties in ES2016
Example:
let employee = { "first name" : "madhu",
                            "last name" : "sudhan" };
console.log(employee["first name"];

let ln = "last name";
let employee = {"first name" : "madhu",
                            [ln] : "sudhan" };
console.log(employee);
console.log(employee["last name"]);

De-structuring Array:
Example:
let employee = ["madhu","talakok","male"];
let [firstname, lastname, gend="female"] = employee;
console.log(firstname); // madhu is printed.
console.log(gend); // male is printed.

De-structuring Objects( instead of fname we can use f):
Example:
let employee = { fname : "madhu",
                            lname : "sudhan" };
let { fname : f, lname:l} = employee;
console.log(employee.f); // prints madhu.

String Templates(using backtick ` key):
let mname = "sudhan";
console.log("madhu"+mname+"talakok");
// to avoid + in string
console.log(`madhu ${mname} talakok`);
let finalString = `madhu ${mname} talakok
                               gajwel
                               india`;
console.log(finalString); // spaces also considered  with backtick

For Loop:
let colors = ["red","green","blue"];
for(let index of colors)
console.log(colors[index]);  // output is red green blue

for (let color of colors)
console.log(color);  // output is red green blue