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Of course, legacy methods can and should be used as fallback for legacy browsers, should one choose to support them. You fall foul of 3.2, though, and additionally have failed to provide support for...

Never use DD scripts as an indication of code quality :)The HTML is valid, the Javascript is not. innerHTML is a proprietary Microsoft property adapted for compatibility when IE had the vast...

The clue's in the name: 'responseText' should contain... text :) Not markup, and not code, but text. Generally I format that text as JSON for ease of parsing. What you should be sending between...

Comes under 'code as strings'. innerHTML has a separate section because it has issues other than that.

I was having trouble sleeping last night and browsing DD and despairing at how the errors in the code were all the same, when it struck me that it might be a good idea to create a big list of all of...

1) BAD MARKUP
1.1) INVALID - Your markup is broken, and
will be rendered in different ways depending on
how the browser decides to error-correct it. The
validation tool at...