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JavaScript function count_word for count word contain UTF 8 character.

function count_word(string)
{
    r1 = new RegExp('[\u3000-\u4DFF]','g');
    r2 = new RegExp('[\u4E00-\u9FFF]','g');
    r3 = new RegExp('[\u0E00-\u0E7F]','g');
    string = string.replace(r1,' {PNK} ');
    string = string.replace(r2,' {CJK} ');
    string = string.replace(r3,' {THI} ');
    //string = string.replace(/(<([^>]+)>)/ig,”") ;
    string = string.replace(/(\(|\)|\*|\||\+|\”|\’|_|;|:|,|\.|\?)/ig," ") ;
    string = string.replace(/\s+/ig," ");
    //string = string.replace(/_+/ig," ");
    var a = string.split(/[\s+|\|\/]/g);
    var count = 0;
    var pnkCounter = 0;
    var thiCounter = 0;
    for (var i=0;i<a.length;i++){
        if (a[i]=='{PNK}'){
              pnkCounter++;
        }else if(a[i]=='{THI}'){
              thiCounter++;
        }else if (a[i].length>0){
              count++;
        }
    }
    count += Math.ceil(pnkCounter/3) + Math.ceil(thiCounter/4);
    return count;
}

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