Check the Easy Stuff First!

While the difference you see between browsers might be due to some obscure browser bug or some new technique you’re using, nine times out of ten, it’s just something simple. It’s easy to blame a problem on a new technique and spend hours debugging it, only to find that you’re changing one file but uploading and viewing a different one.

The general easy stuff:

  • Make sure you’ve uploaded the actual file you want to test (see page 353).

  • Make sure you’ve uploaded the file in the location that you think you have.

  • Make sure you’ve typed the URL that corresponds to the file you want to test.

  • Make sure you’ve saved the file—including the very latest changes—before you upload it.

  • Make sure you’ve uploaded any auxiliary files—CSS, ...

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