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;

}