uniapp-模板弹窗

思路：

1.创建静态弹窗按钮键
2.创建显示窗口【图片】

<template>
<view>
<!-- 静态样式 -->
<!-- 打开弹窗 -->

<view style="padding: 200upx 15%;">
<button type="primary" @tap="showBanner">打开弹窗</button>
</view>

<!-- 弹出层 -->
<view  class="uni-banner" style="background:#FFFFFF;" v-if="bannerShow">
<!-- x -->
<view style=" text-align:right;padding:20upx;border: 1upx solid;" @tap="closeBanner">
<text>x</text>
</view>
<!-- 图 -->
<view>
<image src="https://img-cdn-qiniu.dcloud.net.cn/uniapp/images/shuijiao.jpg" mode="widthFix" style="width:100%;"></image>
</view>
<!-- 按钮键 -->
<view style="margin:50upx 0; margin-bottom:68upx;" >
<button type='warn' style="background:#F6644D; margin:0 80upx;">一个按钮</button>
</view>
</view>

<!-- 做黑色阴影颜色 -->
<view class="uni-mask" v-if="bannerShow"></view>
<!-- 弹出层 -->
</view>
</template>

<script>
export default {
data() {
return {
bannerShow:true
};
},
// 监听页面返回
onBackPress() {
if(this.bannerShow){
this.bannerShow = false;
return true;
}
},
methods: {
closeBanner:function(){
this.bannerShow=false;
},
showBanner:function(){
this.bannerShow=true;
},
}

}
</script>

<style>
/* 弹出层形式的广告 */
.uni-banner {
width: 70%;
position: fixed;
left: 15%;
margin-top: -400upx;
z-index: 99;
}
.uni-mask{
z-index: 1;
background: rgba(0, 0, 0, 0.6);
}
</style>