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I am trying to validate string which can take only alphanumeric values without space. 

str.replace(/[^a-zA-Z0-9\u00E0-\u00FC ]+/gi, '')

I used above code but seems still it is taking white space. Did not able to find the right way to fix it.

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    try: str.replace(/[^a-zA-Z0-9\u00E0-\u00FC]+/gi, '') Commented Oct 19, 2015 at 16:34
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    You put a space in your set of accepted chars so yes, it is taking white spaces. Commented Oct 19, 2015 at 16:36
  • Ohh, I see.. I should not put white space . I was thinking it will take only ascii code. Commented Oct 19, 2015 at 16:37
  • Space is a valid ASCII (and unicode) char. Commented Oct 19, 2015 at 16:37

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Remove the space in regexp

  str.replace(/[^a-zA-Z0-9\u00E0-\u00FC]+/gi, '')
  //  ---------------------------------^ here
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