how to make regular expression match only Cyrillic bulgarian letters

Question

Hello I want to replace all the letters from bylgarian alphabet with empty string I\'ve seen this link How to match Cyrillic characters with a regular expression but it doesn\'

Answer 1

Javascript doesn't support Unicode classes of the form \p{IsCyrillic}.

But, assuming the characters you want to replace are in the Unicode Cyrillic range 0400 - 04FF, you could use:

newstr = strInput.replace( /[\u0400-\u04FF]/gi, '' ); 

For example:

    var strInput = 'уфхцчшщъhelloЁЂЃЄрстыьэю',
        newstr = strInput.replace( /[\u0400-\u04FF]/gi, '' ); 

    console.log( newstr );    //  'hello'