자바스크립트 공백제거 함수

 function Trim(str){ //공백제거 함수
            let index, len, bJudge

            while(true)
            {
                bJudge = true;
                index = str.indexOf(' ');
                if(index == -1) break;
                if(index==0)
                {
                    len = str.length;
                    str = str.substring(0, index) + str.substring((index+1),len);
                }else{
                    bJudge = false;
                }
                index = str.lastIndexOf(' ');
                if(index == -1)break;
                if(index == str.length -1){
                    len = str.length;
                    str= str.substring(0,index) + str.substring((index+1),len);
                }else{
                    if(bJudge == false){
                        break;
                    }
                }
            }
            return str;
        }