codeup-web-exercises/array-manipulation-lecture.html at main · John-Alejandro/codeup-web-exercises · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">
    <title>Array Manipulation Lecture</title>
</head>
<body>
    <main class="container">
        <h1>Array Manipulation Lecture</h1>
    </main>
<script>
"use strict";

// ============================= Array Iteration

var pies = [
    "apple",
    "cherry",
    "key lime",
    "huckleberry",
    "rhubarb"
];

// for loop

// forEach loop


// ============================= Adding and Removing Elements

/*

    // The following array methods change the original array value!

    someArray.shift()   = removes first element
    someArray.unshift() = adds new first element
    someArray.pop()     = removes last element
    someArray.push()    = adds new last element

 */

// var pies = [
//     "apple",
//     "cherry",
//     "key lime",
//     "huckleberry",
//     "rhubarb"
// ];

// array iteration

// push

// pop

// shift

// unshift


// ============================= Slicing

// RETURNS A SUB ARRAY COPY OF THE ORIGINAL

/* SYNTAX

   someArray.slice(startingIndex, startingIndexNotIncluded);

   // one argument only will return a copy from the starting index to the end of the array

 */

// var pies = [
//     "apple",
//     "cherry",
//     "key lime",
//     "huckleberry",
//     "rhubarb"
// ];


// ** create a function that takes in an array of pies baked and return the 3 most recently baked pies


// ============================= Sorting

// var pies = [
//     "apple",
//     "cherry",
//     "key lime",
//     "huckleberry",
//     "rhubarb"
// ];

// pies.sort(); // change the original value


// ============================= Reversing

// var pies = [
//     "apple",
//     "cherry",
//     "key lime",
//     "huckleberry",
//     "rhubarb"
// ];


// ============================= Split / Join


// splitting string into and array

// var names = "Bob Sally Mary";
//
// var namesArr = names.split(" ");
//
// var namesString = namesArr.join("");
//
// console.log(namesString);


// splitting on an empty string

// var everyCharacter = bondsString.split("");

// joining array into a string

// var bondsArray = ["Connery", "Lazenby", "Moore", "Dalton", "Brosnan", "Craig"];
// var bondsString = bondsArray.join("_");
//
//
// var output = "";
// for (var i = 0; i < bondsArray.length; i += 1) {
//     output += bondsArray[i];
//     output += ", ";
// }
//
// console.log(bondsString);


// ** Create a function that will take in a formatted string of numbers and return an array of phone numbers without any symbols. Console.log the output of the returned array.

/* EXAMPLE...

    var phoneNumbers = '210-555-2020\n230-555-2020\n512-555-3030';

    cleanPhoneNumbers(phoneNumbers);

    the above code should output the following...

       2105552020
       2305552020
       5125553030


*/

// var phoneNumbers = '210-555-2020\n230-555-2020\n512-555-3030';


// ============================= (EXTRA INFO) Splicing Elements

/*

    someArray.splice(param1, param2, param3...);

    param1 = which index to start from
    param2 = how many elements to remove
    param3 = from this parameter and onward, arguments passed in will be added as new elements at the end of the array

 */

//
// // create new test array
//     var bonds = ["Craig", "Brosnan", "Dalton", "Moore", "Connery"];
//
//
// // removing elements splice
//     var missingBonds = bonds.splice(bonds.indexOf("Moore"), 2);
//     console.log(bonds);
//     console.log(missingBonds);
//
//
// // adding elements with splice
//     bonds.splice(1, 0, "Lazenby");
//     console.log(bonds);
//
//
// // replace elements
//     bonds.splice(bonds.indexOf("Craig"), 1, "Elba");
//     console.log(bonds);

</script>

</body>
</html>