4 Ways to write Arrow Function in Javascript

Authored By: Sanjeet Tripathi

An Arrow function is an alternative to traditional function declaration in javascript as well as an extension of an anonymous function. It is an easy and efficient feature of Javascript which is used widely in all its framework like React, Angular, and Vue.Js

Do not get confused between the Arrow function and Annonymous Function, as a matter of fact, they both are very much different. See Below

				
					//Anonymous Function
function (x,y){
    return x+y
}

//Arrow function

(x,y) => x+y

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There are different ways to write Arrow Function in Javascript, it is all based on different conditions, and these different approaches reduce the line in coding. Let’s see below all the approaches.

The Traditional way to write Arrow Function

The Arrow function does not use any keyword to declare the function, you can simply write a parenthesis for the arguments and an Arrow sign like this => and then simply write the function body. see an example below

				
					//Traditional way to write Arrow Function

let travelPlan = (location, price) =>{
    console.log("If you want to travel " + location + " it will cost you " + price + " dollars")
}

travelPlan("Paris", 10000)

Writing Arrow Function with two parameters

When there are two parameters in the arrow function you can simply write it like the below.

				
					//Arrow function with two parameters

let addition = (a,b) =>{ return a+b }

addition(30,70)

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Writing Arrow Function with Zero Parameter

In cases where there is no parameter in the function, you can simply write parenthesis, arrow sign, and function body. See example below

				
					//Arrow Function with no parameter

let greeting = () =>{ return "Hello and Good Morning Everyone" }

travelPlan("Paris", 10000)

Writing Arrow Function with single parameters

In the cases, where there is only one parameter in the function, one can remove the parenthesis too. See the example below.

				
					//Arrow function with two parameters

let travelLocation = location =>{ console.log("Lets go to " + location) }

travelLocation("Paris")

The Arrow function provides efficiency and effectiveness to the program, that’s why it is considered one of the best features of Javascript

Keep Coding!!

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