微信小程序中如何自定义showmodal弹出框（附代码）

{{uservip}}
享受以下会员权益

{{vipinfo}}

.mask{
width: 100%;
height: 100%;
position: fixed;
top: 0;
left: 0;
background: #000;
z-index: 9000;
opacity: 0.7;
}
.modalDlg{
width: 550rpx;
height: 520rpx;
position: fixed;
top: 25%;
z-index: 9999;
margin: 0rpx 100rpx 185rpx 100rpx;
background-color: #fff;
border-radius: 36rpx;
display: flex;
flex-direction: column;
align-items: center;
}

.img_wrap{
width: 130rpx;
height: 130rpx;
background: white;
border-radius:50%;
border:1px solid #0097ff;
margin: 0rpx auto;
position: absolute;
top: -65rpx;
margin-bottom: 30rpx;
}
.img_wrap image{
width: 100rpx;
height: 100rpx;
padding-top:15rpx;
padding-left:15rpx;
margin: 0rpx auto;
}
.useralert_huiyuan
{
font-size: 13px;
margin-top: 100rpx;
}
.useralert_quanyi
{
font-size: 13px;
color: darkgray;
}
.fenggexian{
width: 100%;
margin-top: 50rpx;
border-bottom:1px solid #e8e8e8;
}
.vipinfo{
margin-top: 30rpx;
color: #6698ff;
font-size: 11px;
}
 
.shutalert{
width: 110rpx;
margin: 0rpx auto
}
.shutalert image{
width: 100rpx;
height: 100rpx;
position: absolute;
bottom: -120rpx;
}

submit: function() {
this.setData({
showModal: true
})
},
go: function() {
this.setData({
showModal: false
})
},

alert: function() {
var that= this;
this.setData({
showalert: !that.data.showalert
})
},