Browser Developer Tools

Browser Developer

Tools Christian Rokitta

Development 2014

:

Oracle Application Express

Oracle Developer

IDE’sSQL Developer, TOAD, PLSQL Developer, SQL-Plus …

EditCompileDebugSearch

Export/Import…

Oracle APEX Developer

Application BuilderDevelopment Framework

EditRun

DebugSearch

Export/Import…

APEXDeveloper Addonby Peter Raganitsch

Web Development

HTML

APEX → Web Application

CSS JavaScriptStructure Presentation Interaction

Web Browser

What are Browser Developer Tools?

• Built in to the browser• Usually reached with:– F12 on Windows–⌘, and "i" on Mac⌥– Right Click > Inspect Element

• No more alert()

Your Favorite Browser?

Browser Development Tools

• HTML– inspect/edit

• CSS– inspect/edit (/validate)

• JavaScript– inspect/edit/debug/console

• Network– monitor/trace/performance

Browser Development Tools

• Responsive Web Design– Resize?!– Build-in tools

• Browser Version emulation– IE11

• Mobile Device emulation/integration

Device Emulation

Device Integration

Demo

Tips & Tricks

Use the console in any panelIn Chrome and Opera, press the Esc key. In IE11, the keyboard shortcut is Ctrl + '. Safari has a small console prompt available below the main panel by default.

View available CSS propertiesChrome, IE11, Opera 15 and Safari: view the available CSS properties on an attribute by pressing Ctrl and Space when the CSS attribute field is blank.

Tips & Tricks

Reference the current or previously selected DOM elementIf you have an element currently selected in your DOM, you can use the reference $0 to call it within your code.

Reference the current or previously selected DOM elementRetrieve elements you have previously highlightedby using $1 - $4. In Firebug, use $n(2) - $n(5).

Tips & Tricks

Chrome's WorkspaceAllows you to make changes from the developer tools and automatically update your source files.

In Sources menu and right-click on one of your CSS or JavaScript files. Select Map to Network Resource and from the file list that appears and choose the file that matches your selection. You can now make changes to your CSS and JavaScript from within the developer tools and your files will automatically update.

Compare Developer Tools*

• Chrome Developer Tools have the best feature set and the most frequent updates.

• Firefox Developer Tools are catching up;no real need for FireBug anymore.

• Opera (21) Dev Tools = Chrome Dev Tools• I don’t like Safari Developer Tools, I’m using

FireBug Lite extension.• Internet Explorer 11 has great Developer

Tools, IE9/10 were poor.* my personal opinion

Productivity

Training

• Einführung in Oracle Application Express:08.-12. September – online

• HTML, CSS und Javascript in Oracle Application Express:06.-10. Oktober – online

• Advanced Oracle Application Express (APEX) Workshop:22.-26. September - online

http://www.skillbuilders.com/

Questions & Discussion

http://rokitta.blogspot.com

@crokitta

christian@rokitta.nl

http://www.themes4apex.com

? ? ?

http://plus.google.com/+ChristianRokitta

http://nl.linkedin.com/in/rokit/