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Getting started

- Open Tools > Internet Options > Advanced
- Enable the “script debugging” option
- Restart IE

Now when IE6 runs into a javascript problem
it will prompt you to debug the issue with
Visual Studio. You can also use the free
Express Edition
Debugging

Just seeing the cause of the problem
highlighted is sometimes enough for us to
work out what has gone wrong.

In more complex cases we can use Visual
Studio's debugging windows to help us get
more information and diagnose the problem.

The windows can be accessed via the
Debug > Windows menu.
Locals Window

Shows us all the local variables, their type,
and their value.

Keyboard shortcut: Ctrl+D, L
Call Stack Window

Shows the current call stack, and allows us
to step back through the stack.

Keyboard shortcut: Ctrl+D, C
Immediate Window

By far the most powerful debugging tool that
Visual Studio has to offer, allowing us to
evaluate javascript expressions on the fly.

We can inspect global variables, assign
values to any variable within the current
scope, and evaluate any expression we
want!

Keyboard shortcut: Ctrl+D, I
Immediate Window Trick

The immediate window displays object
values but doesn't display anything for
functions.

Trick: “alert(function_variable)” will display
the function's code in an alert message!

Use “alert(argument.callee)” to display the
code of the calling function.
More Information

These slides are based on a blog post
available at Six Revisions, which includes
far more detail and lots of examples.

Also take a look at www.coderholic.com.

Feedback or questions:
ben@coderholic.com

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Debugging Javascript in IE6

  • 1.
  • 2. Getting started - Open Tools > Internet Options > Advanced - Enable the “script debugging” option - Restart IE Now when IE6 runs into a javascript problem it will prompt you to debug the issue with Visual Studio. You can also use the free Express Edition
  • 3.
  • 4. Debugging Just seeing the cause of the problem highlighted is sometimes enough for us to work out what has gone wrong. In more complex cases we can use Visual Studio's debugging windows to help us get more information and diagnose the problem. The windows can be accessed via the Debug > Windows menu.
  • 5. Locals Window Shows us all the local variables, their type, and their value. Keyboard shortcut: Ctrl+D, L
  • 6. Call Stack Window Shows the current call stack, and allows us to step back through the stack. Keyboard shortcut: Ctrl+D, C
  • 7. Immediate Window By far the most powerful debugging tool that Visual Studio has to offer, allowing us to evaluate javascript expressions on the fly. We can inspect global variables, assign values to any variable within the current scope, and evaluate any expression we want! Keyboard shortcut: Ctrl+D, I
  • 8. Immediate Window Trick The immediate window displays object values but doesn't display anything for functions. Trick: “alert(function_variable)” will display the function's code in an alert message! Use “alert(argument.callee)” to display the code of the calling function.
  • 9. More Information These slides are based on a blog post available at Six Revisions, which includes far more detail and lots of examples. Also take a look at www.coderholic.com. Feedback or questions: ben@coderholic.com