Book Image

The JavaScript Workshop

By : Joseph Labrecque, Jahred Love, Daniel Rosenbaum, Nick Turner, Gaurav Mehla, Alonzo L. Hosford, Florian Sloot, Philip Kirkbride
Book Image

The JavaScript Workshop

By: Joseph Labrecque, Jahred Love, Daniel Rosenbaum, Nick Turner, Gaurav Mehla, Alonzo L. Hosford, Florian Sloot, Philip Kirkbride

Overview of this book

If you're looking for a programming language to develop flexible and efficient apps, JavaScript is a great choice. However, while offering real benefits, the complexity of the entire JavaScript ecosystem can be overwhelming. This Workshop is a smarter way to learn JavaScript. It is specifically designed to cut through the noise and help build your JavaScript skills from scratch, while sparking your interest with engaging activities and clear explanations. Starting with explanations of JavaScript's fundamental programming concepts, this book will introduce the key tools, libraries and frameworks that programmers use in everyday development. You will then move on and see how to handle data, control the flow of information in an application, and create custom events. You'll explore the differences between client-side and server-side JavaScript, and expand your knowledge further by studying the different JavaScript development paradigms, including object-oriented and functional programming. By the end of this JavaScript book, you'll have the confidence and skills to tackle real-world JavaScript development problems that reflect the emerging requirements of the modern web.
Table of Contents (17 chapters)

3. Programming Fundamentals

Activity 3.01: The To-Do List Shuffle Program

Solution

  1. All the coding is done in the activity.js file. Add the code after the comment shown in each step. Create the array of todo items:
    // Declare and initialize the todo list array
    let todoList = [
     "Wash Laundry",
     "Clean Silver",
     "Write Letters",
     "Purchase Groceries",
     "Retrieve Mail",
     "Prepare Dinner"
    ];
  2. Examine the ol element in the HTML document file called activity.html and notice that it has an id attribute with the value of todo-list:
     <ol id="todo-list">
     </ol>
  3. You can create an object variable, referencing the ol element using the document.getElementById method:
    // The todo list element
    let todoEle = document.getElementById('todo-list');
  4. Next, write a function that accepts a list element object and an array of values. The function removes the...