//If body has single statement
let myFunction = (arg1, arg2, ...argN) => expression
//for multiple statement
let myFunction = (arg1, arg2, ...argN) => {
statement(s)
}
//example
let hello = (arg1,arg2) => "Hello " + arg1 + " Welcome To "+ arg2;
console.log(hello("User","Grepper"))
//Start checking js code on chrome inspect optionconst exampleArray = ['aa','bbc','ccdd'];
console.log(exampleArray.map(a => a.length));
//Would print out [2,3,4](param1, param2, …, paramN) => { statements }
(param1, param2, …, paramN) => expression
// equivalent to: => { return expression; }
// Parentheses are optional when there's only one parameter name:
(singleParam) => { statements }
singleParam => { statements }
// The parameter list for a function with no parameters should be written with a pair of parentheses.
() => { statements }
var a = [
"We're up all night 'til the sun",
"We're up all night to get some",
"We're up all night for good fun",
"We're up all night to get lucky"
];
// Sans la syntaxe des fonctions fléchées
var a2 = a.map(function (s) { return s.length });
// [31, 30, 31, 31]
// Avec, on a quelque chose de plus concis
var a3 = a.map( s => s.length);
// [31, 30, 31, 31]// The usual way of writing function
const magic = function() {
return new Date();
};
// Arrow function syntax is used to rewrite the function
const magic = () => {
return new Date();
};
//or
const magic = () => new Date();
const suma = (num1, num2) => num1+num2
console.log(suma(2,3));
//5