(UPI) Chapter 11: Managing Errors, Debugging, and Handling Events in JavaScript Course (How To)

Error Handling in JavaScript

This stage covers the fundamentals of error handling using try...catch blocks in JavaScript. It includes key topics such as using catch bindings, the role of the finally block, handling different types of exceptions with conditional blocks, and understanding nested try blocks. Additionally, it explains how to return values from the finally block and how to throw custom exceptions for more control over error management in your code.

• instruction

  try...catch

• instruction

  Catch Binding

• instruction

  The Finally Block

• instruction

  Unconditional catch block

• instruction

  Conditional catch blocks

• instruction

  Nested Try Blocks

• instruction

  Returning from a finally block

• instruction

  Throwing Exceptions

• Error Handling in JavaScript Quiz

  5 questions

Common JavaScript Errors

This stage covers common JavaScript errors, including ReferenceError, SyntaxError, and TypeError. It provides detailed explanations and examples on handling undefined variables, scope issues, and invalid cases in loops, function fields, and object iterations. You'll also learn how to fix issues related to non-iterable objects and the assignment of properties to primitives. The stage includes instructions, a quiz, and various challenges to help solidify your understanding.

• instruction

  ReferenceError: "x" is not defined

• instruction

  Wrong scope

• instruction

  Valid cases

• instruction

  Update older browsers

• instruction

  SyntaxError: a declaration in the head of a for-of loop can't have an initializer

• instruction

  Valid for-of loop

• instruction

  SyntaxError: arguments is not valid in fields

• instruction

  TypeError: 'x' is not iterable

• instruction

  Iterating over Object properties

• instruction

  Iterating over a generator

• instruction

  Iterating over a custom iterable

• instruction

  TypeError: can't assign to property "x" on "y": not an object

• Common JavaScript Errors: ReferenceError, SyntaxError, and TypeError Quiz

  5 questions

Techniques for Debugging JavaScript

This stage covers various techniques for debugging JavaScript, including the use of debuggers, debugging methods, and strategies to reduce debugging time. It highlights practical examples for finding user interface bugs and provides steps to streamline the debugging process. The stage concludes with a quiz to test your understanding of these techniques.

• instruction

  JavaScript Debuggers

• instruction

  Debugging Methods

• instruction

  Steps to Reduce Debugging

• instruction

  Finding User Interface Bugs

• Techniques for Debugging JavaScript: Methods, Strategies, and Practical Examples Quiz

  5 questions

Advanced Event Handling and User Interface Applications in JavaScript

This stage covers advanced event handling in JavaScript, focusing on DOM events, event properties, and the distinction between synchronous and asynchronous behavior. It provides in-depth instruction on managing user interactions and understanding how events are triggered and handled.

• instruction

  Handling DOM events

• instruction

  Event Properties

• instruction

  (A)synchronous Behavior

• instruction

  Summary of Chapter 11

• Advanced Event Handling and User Interface Applications in JavaScript Quiz

  5 questions