/** * JS回置函數群 *  * Author : EasyChen@Gmail.com * GreatThanksto : liyuan's selectPro.js * */ function getElement( name ) {	var el = document.getElementsByName( name );	if( el[0] == null )	{		alert( 'cannot find ' + name + ' ! ' );	}	else	{		return el[0];	}	 }  /** * 回置input text */function set_text( name , value ){	var el = getElement( name );	el.value = value;}/** * 回置日期框 */function set_date( str , yname , mname , dname ){	var vs = str.split( '-' );	set_select( yname , vs[0] );	set_select( mname , vs[1] );	set_select( dname , vs[2] );}/** * just setback year and month */function set_year_month( str , yname , mname ){	var vs = str.split( '-' );	set_select( yname , vs[0] );	set_select( mname , vs[1] );}/** * 回置下拉框 * * select 的回置必須指定value，如果該option沒有value，則顯示為空白 * select回置為數值時，firefox會把01變成1，而ie不會，必須精確匹配  */function set_select( name , value ){	var sel = getElement( name );	var ops = sel.options;	for( var i = 0 ; i < ops.length ; i++ )	{		if( ops[i].value == value  )		{			try			{				if( i != ops.selectedIndex )				{					ops.selectedIndex = i;					ops[i].selected = true;				}							}			catch( e ) 			{				// alert( e.description );				// ie對于動態生成的下拉框會拋出一個“不能設置selected屬性，未指明的錯誤”的異常				// 原因不明，先不做處理			}								}	}}/** * 回置單選按鈕 * * 通過遍歷該名稱的radio組件實現 */function set_radio( name , value ){	var objRadio = document.getElementsByName( name );	for(var i=0;i<objRadio.length;i++)	{		if(objRadio[i].type=="radio")		{			if( objRadio[i].value == value )			{				objRadio[i].checked = true;			}		}	}}function set_checkbox( name , value ){	var obj = document.getElementsByName( name );	for(var i=0;i<obj.length;i++)	{		if(obj[i].type=="checkbox")		{			if( obj[i].value == value )			{				obj[i].checked = true;			}		}	}}/** * 初始化select下拉框 * */function ini_select( name , Karray , N  ){	var selObj = getElement( name );		for( key in Karray )	{		if (key == 0 && N == 1)		{			// alert( Karray[key] );			continue;		}		selObj.options[selObj.length]=new Option( Karray[key] , key );	}}/** * 添加select的option項  * */function add_option( name , texts , value ){	var selObj = getElement( name );	selObj.options[selObj.length]=new Option( texts , value );}/** * 移出select的選項 */function remove_option( name , value ){	var selObj = getElement( name );		for( var i = 0 ; i < selObj.length ; i++ )	{		if( selObj[i].value == value  )		{			try			{				selObj.remove( i );			}			catch( e ) 			{				// alert( e.description );				//e.description			}				}	}}/* * 給元素添加事件 * * 如何傳遞有參數的函數？ * 使用匿名function  * - 如 add_event( name1 , "change" , function(){ adjust_select( name1 , name2 , array2 ) } ); */function add_event( name , event , func ){	var el = getElement( name );  						var names = navigator.appName;	if( names == "Microsoft Internet Explorer" )	{		// IE 		el.attachEvent( "on" + event , func );	}	else	{		// 其他瀏覽器使用addEventListener(是W3c規范)		el.addEventListener( event , func , false);	}	// if( names == "Netscape" )		}/** * adjust_select用于保持二級聯動之間的一致性 *  * 由1級選項自動調整2級選項 * array2是和array1相對應的一個關聯數組 * 詳細格式見city.js */function adjust_select( name1 , name2 , array2 , N ){	var obj1 = getElement( name1 );		var obj2 = getElement( name2 );		// 取得obj1被選中的項	var str = parseInt( obj1.options[obj1.selectedIndex].value );	//if( str != 0 && str != NaN )	if( str != NaN )	{		obj2.innerHTML="";		ini_select( name2 , array2[str] , N );	}	else	{		obj2.innerHTML="";	}}/** * 由二級菜單的值直接推算一級菜單 */function set_select_by_2( name1 , name2 , array2 , value2 ){	value2 = value2 + '';	var pcode = value2.substr( 0 , 2 );	set_select( name1 , pcode );	adjust_select( name1 , name2 , array2 );	set_select( name2 , value2 );}/** * 根據條件生成year * * 當beginyear小于等于零時，beginyear為相對于當前年份的起始時間，endyear為向后數的年份 * 0 , 5 - 從今年開始向后5年 * -5 ， 10 - 從5年前向后10年 */function ini_year( yname , beginyear , endyear ){	var year = getElement( yname );		year.innerHTML = '';		var d = new Date();		if( beginyear <= 0 )	{		beginyear += d.getFullYear();		endyear += beginyear;	}		if( beginyear < endyear )	{		for( var i = beginyear ; i <= endyear ; i++  )		{			year.options[year.length] = new Option( i + '' , i );		}	}	else	{		for( var i = beginyear ; i >= endyear ; i--  )		{			year.options[year.length] = new Option( i + '' , i );		}	}}function ini_month( name ){	ini_num( name , 12 );}function ini_date( name ){	ini_num( name , 31 );}function ini_num( name , num ){	var date = getElement( name )		var o = date.value;		date.innerHTML = '';		for( var i =1 ; i <= num ; i++ )	{		date.options[date.length] = new Option( i + '' , i );	}	if( o != NaN )	{		set_select( name , o );	}}function year_set_ini( yname , beginyear , endyear , mname , dname ){	ini_year( yname , beginyear , endyear );	ini_month( mname );	ini_date( dname );	add_event( mname , "change" , function(){ adjust_date( yname , mname , dname ) } );	add_event( yname , "change" , function(){ adjust_date( yname , mname , dname ) } );}function year_set_back( yname , beginyear , endyear , mname , dname , value ){	year_set_ini( yname , beginyear , endyear , mname , dname );	set_date( value , yname , mname , dname );	adjust_date( yname , mname , dname );}function adjust_date( yname , mname , dname ){	var year = getElement( yname );	var month = getElement( mname );	var date = getElement( dname );		var n = 31;	var y = year.options[year.selectedIndex].value;	var m = month.options[month.selectedIndex].value;	if( m == 4 || m == 6 || m == 9 || m == 11  )	{		n = 30;	}		if( m == 2 )	{		if( y % 4 == 0 && y % 100 != 0 )		{			n = 29;		}		else		{			n =28;		}	}		ini_num( dname , n );	}function select_set_back( name , array , value , N ){	ini_select( name , array , N );	if( value != '' )	{		set_select( name , value );	}}function select_set_ini( name , array , N ){	ini_select( name , array , N );}function change_action( name , formname , action ){	add_event( name , "click" , function(){  var f = getElement( formname );f.action = action; } );}/** * 初始化并回置聯動菜單數據 */function dselect_set_back( name1 , array1 , name2 , array2 , value2 , N ){	//ini_select( name1 , array1  );		//add_event( name1 , "change" , function(){ adjust_select( name1 , name2 , array2 } );	dselect_set_ini( name1 , array1 , name2 , array2 , N );	if( value2 != '' )	{		set_select_by_2( name1 , name2 , array2 , value2  );	}	}/** * 初始化聯動菜單 */function dselect_set_ini( name1 , array1 , name2 , array2 , N  ){	ini_select( name1 , array1 , N );		add_event( name1 , "change" , function(){ adjust_select( name1 , name2 , array2 ) } );}function getYear(){	var d = new Date();	return d.getFullYear();}function getMon(){  var d = new Date();	return d.getMonth();}function getCurrentDate(){	var d = new Date();	var y = d.getFullYear();	var m = d.getMonth()+1;	var dt = d.getDate();	return y + '-' + m + '-' + dt ;	}String.prototype.trim = function(){// 用正則表達式將前后空格// 用空字符串替代。return this.replace(/(^\s*)|(\s*$)/g, "");}