It's easy to provide this function, but in which situations would it be useful? In most cases that I can think of you're interested in far more constrained definitions of validity: - what are valid ECMAScript identifiers? - what are valid BCP 47 language tags? - what are the characters allowed in a certain protocol? - what are the characters that my browser can render?
Thanks, Norbert On Mar 24, 2012, at 12:12 , David Herman wrote: > On Mar 23, 2012, at 11:45 AM, Roger Andrews wrote: > >> Concerning UTF-16 surrogate pairs, how about a function like: >> String.isValid( str ) >> to discover whether surrogates are used correctly in 'str'? >> >> Something like Array.isArray(). > > No need for it to be a class method, since it only operates on strings. We > could simply have String.prototype.isValid(). Note that it would work for > primitive strings as well, thanks to JS's automatic promotion semantics. > > Dave > _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
