extjs 获取日期控件的值_Extjs的datefield怎么获取当前系统时间所属月月初到月末...

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日期控件：

new Ext.form.DateField( {

fieldLabel : '开始日期',

id : 'beginDate',

width : 90,

//value:sys.sysDate.substring(0,7)+'-01',

value: timeYesterday,

format:'Y-m-d',

allowBlank : true,

listeners : {

specialkey : function(field, e){

if(e.getKey() == Ext.EventObject.ENTER){

loadGrid(settlementRrunStatusQueryDetailDatastore);

}

}

}

})

timeYesterday：

var curDate = new Date();

var preDate = new Date(curDate.getTime() - 24*60*60*1000);

var myDate = new Date();

var year = myDate.getFullYear();

var month = myDate.getMonth()+1;

if (month<10){

month = "0"+month;

}

var firstDay = year+"-"+month+"-01";

var myDate = new Date(year,month,0);

var lastDay = year+"-"+month+"-"+myDate.getDate();

//

datefeildStart.setValue(firstDay);

datefeildEnd.setValue(lastDay);

//获取当前日期的前一天

var timeYesterday = preDate.format("Y") +"-" +preDate.format("m") + "-"+(preDate.format("d"));//昨天

//获取当前日期

var timeToday = curDate.format("Y") +"-" +curDate.format("m") + "-"+(curDate.format("d"));//今天

//获取本月的第一天

var timeFirstDay = preDate.format("Y") +"-" +preDate.format("m") + "-01";//本月第一天