Replace unicode space characters

Question

I need to replace the unicode characters defined on here

I have got this so far but it seems to remove all space including standard spacebar ones:

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Answer 1

I guess you should use the escape sequence for spaces (15.10.2.12 of the norm) which is \s, and that you want to replace multiple spaces by a single one :

str= str.replace(/\s+/g,' ') ;