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Advanced JS Notes

 Advanced JS Notes :




Arrow Functions: 

Code: 
let sumIs = (a, b) => a + b

console.log(sumIs);

let randomIs = () => Math.random;

document.addEventListener('click', () => console.log("click");)


Spread Operator


// Spread Operator

arr = [1, 3, 1];

let sum = (a, b) => a + b;

let s = sum(...arr);
// console.log(s);

arr2 = [2, 5, 5];
let b = [...arr, ...arr2]; //Concating arr using spread
console.log(b);

// Spread With Obj

let obj1 = {
  name: "Mihir",
  age: 24,
  favStar: "TrishCollins",
};


let obj2 = { ...obj1, name: "Rahul", favStar: "SRK" };
// Object manipulation using spread operator

console.log(obj2);

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