IE Developer Tools Jonathan Seitel Program Manager

Dev Tools: Foundations IE8: it's not old, it's classic

Key Benefits of IE Dev Tools A visual interface to the platform Remove black box around Trident Debug where your bugs happen: in the browser Included with IE Fast experimentation Reduce “edit, save, deploy, refresh” cycle Spend more time adding features (And less time fixing bugs.)

Debugging: HTML and CSS View applied rules Trace styles View layout Edit HTML and CSS Save changes

Debugging: JavaScript Execution control Per-statement debugging Variable Inspection Console, including console.log support

Debugging: Compatibility Easily change browser mode Changes user agent string, version vector, default document mode Easily change document mode Affects how IE interprets a page

Demo: T-Shirt Designer Quick compat checking Thorough CSS tracing Fast, easy JS debugging 7

Debugging: Performance JavaScript Profiler One click start/stop of profiler Quickly see where application is spending time, including within built-in functions Function or Call Tree View Export data to file Currently hooking up to our new, even faster scripting engine

Demo: Profiler Easy to compare side-by-side See which code paths are being hit Can help you spot patterns for optimization Easy export for deeper analysis 9

Dev Tools: HTML5 and Beyond The future is here

Debugging Improvements New elements and APIs, same power XML, XHTML, SVG CSS directly from layout engine JavaScript Word wrap Go to line

Performance View Source HTML5 spec: Loads in <5s JS Debugging Quite good for large JS files (>10 kloc) Navigation Keep the dev tools open while you browse

Demo: HTML5 T-Shirt Designer New Elements and APIs Same dev tool constructs Easy iteration of your new code 13

Network Monitor Easily inspect headers, performance, and networking issues

Network Monitor Capture all HTTP traffic Inspect IE, AJAX, Flash, and Silverlight Request timing graph XML export (see: Fiddler talk)

Demo: Network Monitor Start capturing to listen to HTTP traffic Applies to traffic from your entire app Great high-level way of debugging network issues 16

Tips and Tricks Things you'll love

Inspecting Headers

SVG Debugging Play with your SVG images in real-time

Search with Selectors API Prefix your search string with to use the W3C's Selectors API

Customize View Source App Easily choose the built-in viewer, Notepad, or any other application without modifying the registry

JS Debugging Within a Line Set breakpoints and step through each JavaScript statement, even when contained on the same line

Syntax Coloring and Fonts Improved readability with syntax coloring and an excellent font: Consolas

Keyboard Accessibility Extensive keyboard support Complete reference: us/library/cc848896(VS.85).aspxhttp://msdn.microsoft.com/en- us/library/cc848896(VS.85).aspx Interoperable shortcuts with other tools where possible Execution control shortcuts same as Visual Studio Open/Close and navigating edit boxes same as Firebug

Color Picker Simple yet just what you need

Resize Window Quick, exact window size testing

Next Steps Press F12 Check out ietestdrive.com Tell us what you think! 27

Keep up on the latest Meet the team in the Internet Explorer Lounge located in The Commons! Download the Internet Explorer 9 Platform preview

© 2009 Microsoft Corporation. All rights reserved. This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.