使用top.$('#txtReason').val();获取值;
//不通过 function unAuditData(id) { parent.layer.open({ type: 1, title: '未通过原因', skin: 'layui-layer-molv', closeBtn: 0, shadeClose: true, shade: false, area: ['300px', '180px'], content:'<div id="mydiv" style="margin-left:10px;margin-top:10px;"><textarea id="txtReason" style="width:280px;height:70px;resize:none;border-radius:6px;border-color:red;" ></textarea></div>', btn: ['确定', '取消'] , yes: function (index, layero) { var txtReason = top.$('#txtReason').val(); alert(txtReason); } }); };