var pparr=parr[i].split('-'); if (pparr[0]=='key'){ if (newparam==''){ newparam='key-'+(key); }else{ newparam+=',key-'+(key); } }else{ if (newparam==''){ newparam=parr[i]; }else{ newparam+=','+parr[i]; } } } if (newparam.indexOf('key-')==-1 && key!=''){ if (newparam==''){ newparam='key-'+key; }else{ newparam+=',key-'+(key); } } return newparam; }