javascript - trim non-ascii characters from string returned by nodejs crypto - Stack Overflow

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I have successfully decrypted a sensitive data using nodejs crypto library.

The problem is that the decrypted data has a trailing non-ascii characters.

How do I trim that?

My current trim function I below does not do the job.

String.prototype.fulltrim = function () {
  return this.replace( /(?:(?:^|\n)\s+|\s+(?:$|\n))/g, '' ).replace( /\s+/g, ' ' );
};

I have successfully decrypted a sensitive data using nodejs crypto library.

The problem is that the decrypted data has a trailing non-ascii characters.

How do I trim that?

My current trim function I below does not do the job.

String.prototype.fulltrim = function () {
  return this.replace( /(?:(?:^|\n)\s+|\s+(?:$|\n))/g, '' ).replace( /\s+/g, ' ' );
};

• javascript
• string
• node.js
• cryptography
• trim

Share Improve this question Follow edited Jul 16, 2012 at 5:10 Inkbug 1,69211 gold badge1111 silver badges2828 bronze badges asked Jul 16, 2012 at 4:45 ianian 1,69522 gold badges1919 silver badges2424 bronze badges 0

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2 Answers 2

Sorted by: Reset to default 5

I think following would be suffice.

str.replace(/[^A-Za-z 0-9 \.,\?""!@#\$%\^&\*\(\)-_=\+;:<>\/\\\|\}\{\[\]`~]*/g, '') ; 

Based on this answer, you can use:

String.prototype.fulltrim = function () {
  return this.replace( /([^\x00-\xFF]|\s)*$/g, '' );
};

This should remove all spaces and non-ascii characters at the end of the string, but leave them in the middle, for example:

"Abcde ffאggg ג ב".fulltrim();
// "Abcde ffאggg";

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