三个按钮:
,btn: ['拨打','挂断','关闭']

'拨打','挂断' 这两个是不同时出现的。

var dialog = layer.open({    type: 2    ,title: '拨打电话'    ,content: 'customerPhone.jsp'    ,maxmin: true    ,area: layui.setter.area_percent    ,offset:'t'    ,btn: ['拨打','挂断','关闭']    ,btnAlign: 'c'    ,success:function(layero,index){        window.formData = rec;        window.formData = $.extend(rec,{            seatStatus:$("#seatStatus").val(),            callType:$("#callType").val(),        });        $("a.layui-layer-btn1").css("background-color","#FF5722");        setTimeout(function () {            callPhone(rec.id,rec.mobile);            $("a.layui-layer-btn0").hide();            $("a.layui-layer-btn1").show();        },500)    }    ,yes:function (index, layero) {        callPhone(rec.id,rec.mobile);        $("a.layui-layer-btn0").hide();        $("a.layui-layer-btn1").show();        return false;    }    ,btn2:function (index, layero) {        hangUpPhone();        $("a.layui-layer-btn0").show();        $("a.layui-layer-btn1").hide();        return false;    }    ,btn3:function (index, layero) {    }});

控制的代码就是:

        $("a.layui-layer-btn0").show();        $("a.layui-layer-btn1").hide();