function DeleteHtmlFromStartToEnd(str, begin, end) {             str = str.replace(begin + end, "");             if (str.indexOf(begin) == -1) {//没找到                 return str;             }             var substr = str.substring(str.indexOf(begin) + begin.length, str.indexOf(end));             str = str.replace(substr, "");             return DeleteHtmlFromStartToEnd(str, begin, end);         }         var str = '00000<!--deleteBegin-->1234567<!--deleteEnd-->111111<!--deleteBegin-->890<!--deleteEnd-->22222<!--deleteBegin-->890<!--deleteEnd--><!--deleteBegin-->890<!--deleteEnd-->3';         var result = DeleteHtmlFromStartToEnd(str, '<!--deleteBegin-->', '<!--deleteEnd-->');         alert(result);