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e.g.
<div class="big left important"> some content </div> Does anyone know if this breaks things / has good browser support?
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External JavaScript And, of course, any data-* attribute value can contain spaces that are meaningful (including leading and trailing spaces) so those spaces have to be reflected when accessing the element using that attribute value.
XML does not require a specific form of line break, so you can use whatever is convenient (carriage return, linefeed, or a combination) when creating an XML file. XML parsers will do the right thing largely because they're parsing on tags, not records - so whatever line break you're using is just whitespace to XML.
Returns, tabs, etc are considered white space and should be treated the same. I've seen and done formatting similar to how you have posted it. Some may discourage it. But I've never seen anything choke on it.
When creating my own web robots, I've had to clean up the white space in order for them to function because ultimately the robot runs into examples such as yours.
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