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Learn how to use Chrome Developer Tools (DevTools) to test and debug websites and applications.
All major browsers offer tools to examine the code of a webpage or app and evaluate its performance. Chrome Developer Tools (DevTools) is the industry standard. In this course, you can explore how Chrome DevTools work in actual testing and debugging scenarios and how you can add this useful collection of utilities to your development workflow. Each chapter digs into a different tool, including the Console, Elements, Network, and Application panels. Instructor Sasha Vodnik helps you test webpages and apps in different device modes and emulators, explore the DOM, inspect and modify HTML and CSS, edit source files, identify bottlenecks in page loads, access and manipulate cookies, and more. Plus, learn useful tricks and shortcuts for speeding up common debugging tasks.
Overview
Syllabus
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Introduction
- Streamlining development with Chrome DevTools
- What you should know
- Setting up your environment
- Accessing and using the developer tools
- Customizing the display of the developer tools
- View a page in Device Mode
- Test a responsive design
- Emulate rendering on other devices
- Model connection speeds
- Challenge: Critique a responsive design
- Solution: Critique a responsive design
- Inspect elements
- Modify the DOM
- Inspect styles
- Modify styles
- Capture a screenshot
- Challenge: Inspect and modify elements and styles
- Solution: Inspect and modify elements and styles
- View messages in the Console
- Write information to the Console
- Use the Console command line
- Examine elements in the Console
- Challenge: Work with the Console
- Solution: Work with the Console
- Open files in DevTools
- Work with breakpoints
- Edit files and save changes
- Challenge: Edit source files
- Solution: Edit source files
- View HTTP request and response headers
- Identify items that slow page loading
- Emulate mobile connections
- Challenge: Examine network performance
- Solution: Examine network performance
- Examine storage
- Work with cookies
- Challenge: Examine local storage and cookies
- Solution: Examine local storage and cookies
- Next steps
