What is an arrow function in JavaScript code example
Example 1: javascript arrow function
let add = function(x,y) {
return x + y;
}
console.log(add(10,20));
let add = (x,y) => x + y;
console.log(add(10,20));
let add = (x, y) => { return x + y; };
Example 2: es6 arrow function
const multiplyES6 = (x, y) => x * y;
Example 3: () = javascript
function sum(a, b) {
return a + b;
}
let sum = (a, b) => a + b;
Example 4: arrow function javascript
let myFunction = (arg1, arg2, ...argN) => expression
let myFunction = (arg1, arg2, ...argN) => {
statement(s)
}
let hello = (arg1,arg2) => "Hello " + arg1 + " Welcome To "+ arg2;
console.log(hello("User","Grepper"))
Example 5: javascript this inside arrow function
function A() {
this.val = "Error";
(function() {
this.val = "Success";
})();
}
function B() {
this.val = "Error";
(() => {
this.val = "Success";
})();
}
var a = new A();
var b = new B();
a.val
b.val
Example 6: arrow function javascript
function (a){
return a + 100;
}
(a) => {
return a + 100;
}
(a) => a + 100;
a => a + 100;