Fat arrow functions in JavaScript



The fat arrow function syntax looks like the following −

(param1,param2,..)=>{ }

It doesn’t have the function keyword and only have the => between the parameters and the function body.

Following is the code implementing fat arrow functions in JavaScript −

Example

 Live Demo

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <style>    body {       font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;    }    .result{       font-size: 20px;       font-weight: 500;       color: blueviolet;    } </style> </head> <body> <h1>Fat arrow functions</h1> <div class="result"></div> <button class="Btn">CLICK HERE</button> <h3>Click on the above button to call the add() fat arrow function</h3> <script>    let resEle = document.querySelector(".result");    let add = (a, b) => {       return a + b;    };    document.querySelector(".Btn").addEventListener("click", () => {       resEle.innerHTML = "Sum of 32 and 19 =" + add(32, 19);    }); </script> </body> </html>

Output

On clicking the ‘CLICK HERE’ button −

Updated on: 2020-07-17T11:37:31+05:30

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