var $timeStart   = document.getElementById('timeStart');var $timeEnd     = document.getElementById('timeEnd');$timeStart.addEventListener('tap', function() {	var optionsJson = this.getAttribute('data-options') || '{}';	var options = JSON.parse(optionsJson);	var id = this.getAttribute('id');	var picker = new mui.DtPicker(options);	picker.show(function(rs) {		$timeStart.value = rs.text;		picker.dispose();	});	$Validate.remove("timeStart_活动时间开始 必须填写.");}, false);$timeEnd.addEventListener('tap', function() {	var timestart = $timeStart.value;	var picker = new mui.DtPicker({	    type: "datetime",	    beginDate: new Date(timestart),	    endDate: new Date(2021, 12, 31 , 23, 59),	    labels: ['年', '月', '日', '时', '分'],	})	picker.show(function(rs) {		$timeEnd.value = rs.text;		picker.dispose();	});	$Validate.remove("timeEnd_活动时间结束 必须填写.");}, false);