html程式碼：

<li>
	<span class="label">計劃執行日期</span>
	<input name="" id="planRunDt" class="easyui-datebox" data-options="editable:false">
</li>

js程式碼:

$('#planRunDt').datebox('setValue', getCurentDateStr());
	$('#planRunDt').datebox('calendar').calendar({
		validator : function(date){
			var now = new Date();
			var d1 = new Date(now.getFullYear(),now.getMonth(),now.getDate());
			return date <= d1;
		}
});

function getCurentDateStr()
{ 
	var now = new Date();
    var year = now.getFullYear();       //年
    var month = now.getMonth() + 1;     //月
    var day = now.getDate();            //日
    var clock = year + "-";
    if(month < 10) clock += "0";       
    clock += month + "-";
    if(day < 10) clock += "0"; 
    clock += day;
    return clock; 
}
 

效果：