The book assumes that the reader has had some exposure to programming. The book also assumes that you are familiar with the Salesforce Apex programming language, JavaScript fundamentals (especially the concepts of variables, callbacks, and promises), HTML, and CSS. The book expects that you are familiar with Salesforce administration capabilities, such as creating objects and fields, and navigating through Salesforce.

To get most out of the book, sign up for a promotional Salesforce Org with Salesforce DX enabled at https://developer.Salesforce.com/promotions/Orgs/dx-signup, and a developer Org at https://developer.Salesforce.com/signup, and try all the code snippets discussed in the book by creating scratch Orgs for every chapter. Instructions for creating scratch Orgs, with the accompanying code, can be found in the following GitHub repository: https://github.com/PacktPublishing/Learning-Salesforce-Lightning-Application-Development.

The book uses the following software, all of which is freely available:

• Salesforce DX CLI (https://developer.Salesforce.com/tools/sfdxcli)
• Visual Studio Code editor (https://code.visualstudio.com/)
• Salesforce DX plugin for Visual Studio from the Visual Studio marketplace (https://marketplace.visualstudio.com/items?itemName=Salesforce.Salesforcedx-vscode)

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Learning-Salesforce-Lightning-Application-Development. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://www.packtpub.com/sites/default/files/downloads/LearningSalesforceLightningApplicationDevelopment_ColorImages.pdf.

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in the text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "To override New, Edit, or View, the Lightning component must implement the Lightning:actionOverride interface."

A block of code is set as follows:

function StringUtils() {};

StringUtils.prototype.concatenate = function(str1,str2) {
  return str1.concat(str2);
};

StringUtils.prototype.camelcase = function(string) {
  string = string.toLowerCase().replace(/(?:(^.)|([-_\s]+.))/g, function(match) {
      return match.charAt(match.length-1).toUpperCase();
  });
  return string.charAt(0).toLowerCase() + string.substring(1);
};

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

describe("when string operations are performed", function(){
       
      //Spec for Concatenation operation
      it("should be able to concatenate hello and world", function() {
          expect(stringUtil.concatenate('Hello','World')).toEqual('HelloWorld');
      });

      //Spec for camelcase operation
      it("should be able to camelcase", function() {
          expect(stringUtil.camelcase('hello-world')).toEqual('helloWorld');
      });

      //Spec for capitalizeFirstLetter
      it("should be able to capitalize First Letter", function() {
          expect(stringUtil.capitalizeFirstLetter('world')).toEqual('World');
      }); 
  });

Any command-line input or output is written as follows:

sfdx force:lightning:test:run

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Once in the Setup menu, find App Manager from the search box. A new Lightning app can be created using the New Lightning App button."