Chapter 8, Built-In JavaScript Methods

Practice exercises

Practice exercise 8.1

const secretMes1 = "How's%20it%20going%3F";    
const secretMes2 = "How's it going?";
const decodedComp = decodeURIComponent(secretMes1);
console.log(decodedComp);
const encodedComp = encodeURIComponent(secretMes2);
console.log(encodedComp);
const uri = "http://www.basescripts.com?=Hello World";
const encoded = encodeURI(uri);
console.log(encoded);

Practice exercise 8.2

const arr = ["Laurence", "Mike", "Larry", "Kim", "Joanne", "Laurence", "Mike", "Laurence", "Mike", "Laurence", "Mike"];
const arr2 = arr.filter ( (value, index, array) => {
    console.log(value,index,array.indexOf(value));
    return array.indexOf(value) === index;
});
console.log(arr2);

Practice exercise 8.3

const myArr = [1,4,5,6];
const myArr1 = myArr.map(function...