The Arrow Functions

A simple and concise way of creating functions is an Arrow Function.

The syntax of arrow function is 

let func = (arg1,arg2,...,argN) => {
    // function body
}	

This function can be called exactly similar to a normal function ex. func(val1,val2,...,valN)

When function has only single parameter , it can be written in more simple way as ex. 

let square = num => num*num;

here we don't require the parenthesis for the function parameters.

While creating single line functions like above, we can omit return keyword for simplicity.

Best use cases of arrow functions:

• Simple functions
• Callbacks
• Arrow functions don't have their own this , so use them where you don't require this .