arrow function rec
(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 }arrow function javascript
///////
//JavaScript Function Declarations
///////
//4th (arrow function)
hello4 = (name) => { return ("Hello " + name); }
//OR
hello5 = (name) => { return (`Hello new ${name}`) }
//1st (simple function)
function hello1() {
return "Hello simple function";
}
//2nd (functino expression)
hello2 = function() {
return "Hello functino expression";
}
// 3rd ( IMMEDIATELY INVOKED FUNCTION EXPRESSIONS (llFE))
hello3 = (function() {
return "Hello IMMEDIATELY INVOKED FUNCTION EXPRESSIONS (llFE)";
}())arrow function javascript
// Normal Function in JavaScript
function Welcome(){
console.log("Normal function");
}
// Arrow Function
const Welcome = () => {
console.log("Normal function");
}es6 arrow function
const multiplyES6 = (x, y) => x * y;es6 arrow function
//ES5
var phraseSplitterEs5 = function phraseSplitter(phrase) {
return phrase.split(' ');
};
//ES6
const phraseSplitterEs6 = phrase => phrase.split(" ");
console.log(phraseSplitterEs6("ES6 Awesomeness")); // ["ES6", "Awesomeness"]es6 arrow function
// ES6
const prices = smartPhones.map(smartPhone => smartPhone.price);
console.log(prices); // [649, 576, 489]Copyright © 2021 Codeinu
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