One of the most useful features I’ve found in Coda which I’ve been using a lot recently is validating XHTML code in it. With one or two simple clicks, you can get Coda to check over all your code and tell you if it has any errors with validation. It finds where you might have forgotten to close any tags, as well as various other things about your code.
There are three ways to turn on code validation. You can enter Option-Command-V, click on the triangle with an exclamation point in it near the bottom of the window, or select View from the menu bar and then choose “Show Validation Errors.”
Once you have turned on code validation, there are a couple ways of taking advantage of it. One way is to look on the left side of the code, where you will now see line numbers. Wherever you have a validation error, Coda will place a small yellow triangle with an exclamation point in it to warn you of the error. Alternatively, you can click on the two errors beside the validation icon at the bottom of the window to scroll through errors.
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