Defensive Coding Fundamentals for JavaScript and HTML5

Overview/Description
Target Audience
Prerequisites
Expected Duration
Lesson Objectives
Course Number
Expertise Level

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Overview/Description
Defensive programming is a methodology for writing code that is not prone to present or future errors potentially caused by unexpected user inputs or actions. In this course, you will explore the fundamentals of defensive programming for JavaScript and HTML5. This includes defensive techniques for HTML5 and JavaScript, as well as using inspections and testing, input validation, how to properly use variables and statements in JavaScript and HTML5. Lastly, you'll explore best practices for working with errors in HTML5 and JavaScript.

Target Audience
Developers seeking an introductory guide to developing efficient, secure applications that are defendable against a variety of issues

Prerequisites
None

Expected Duration (hours)
1.7

Lesson Objectives

Defensive Coding Fundamentals for JavaScript and HTML5

start the course

describe the potential risks faced by software applications

identify the key reasons why risks are a recurring issue

recognize the key features of defensive coding

list some key approaches to preventing problems during the planning stage

recognize the correct way to use, or not use, the escape function

identify the key features of a strong Cross-Origin Resource Sharing Policy

use event handlers to account for and prevent untrusted data

utilize secure Web storage in JavaScript and HTML5

utilize secure web messaging in JavaScript and HTML5

identify the key features and benefits of testing

describe the benefits of testing your code for multiple browsers

recognize how to write testable code in JavaScript and HTML5

recognize how to perform tests using Visual Studio for JavaScript and HTML5

create examples of defensible methods in JavaScript and HTML5

identify the techniques for applying defensive techniques for method parameters and return values in JavaScript and HTML5 methods

recognize how to implement variable declarations for defendable code

identify how to use null values in creating defendable code

identify how to use if and switch statements in creating defendable code

identify error-handling techniques to promote defensive coding

demonstrate how to use exceptions to handle errors

create a JavaScript and HTML5 application that incorporates error codes and messages into its error handling

recognize how to use error processing and global objects

identify how to handle errors locally in JavaScript and HTML5 code

recognize how to anticipate potential errors in JavaScript and HTML5 code

use defensive coding techniques to create clean testable methods

Course Number:
sd_dpjh_a01_it_enus

Expertise Level
Intermediate