点击w97日期控件自动取得所在星期几放到输入框

//js对象date的date.getDay()方法

function pFn(rq){
    var d = convertDateFromString(rq);
    var weekday=new Array(7)
/*      weekday[0]="星期天";
        weekday[1]="星期一";
        weekday[2]="星期二";
        weekday[3]="星期三";
        weekday[4]="星期四";
        weekday[5]="星期五";
        weekday[6]="星期六"; */
        weekday[0]="天";
        weekday[1]="一";
        weekday[2]="二";
        weekday[3]="三";
        weekday[4]="四";
        weekday[5]="五";
        weekday[6]="六";
        
        //alert(weekday[d.getDay()]);
       $("#xq").val(weekday[d.getDay()]);
    }
    //输入字符串，返回date对象，格式yyyy-MM-dd
    function convertDateFromString(dateString) {
        if (dateString) {
            var date = new Date(dateString.replace(/-/, "/"))
            return date;
        }
    }
    

<input type="text" name="rq" onclick="WdatePicker({dateFmt:'yyyy-MM-dd',onpicked:function(dp){pFn(dp.cal.getNewDateStr())}})" value="<fmt:formatDate value='${xxx.rq}' pattern='yyyy-MM-dd' />"/>