JavaScript 通過 option value 值確定預設選中的option

 

 

 

                <script language="javascript" type="text/javascript">
                    function mdcheck(value,select_id){
                       
                        var opt = document.getElementById(select_id).innerHTML.toString();
                       
                        var re = new RegExp(value,"g");
                       
                        opt = opt.replace(/<OPTION|<//OPTION>| selected|value/g,"").match(/=.*?>/g).toString().replace(/=|>/g,"").replace(re,"┢").replace(/[^,┢]/g,"").indexOf("┢");
                        document.getElementById(select_id).getElementsByTagName("option")[opt].selected = true;
                    }
                    mdcheck("MD CHECKED","plastatus");
                </script>