本文例項為大家分享了微信小程式實現底部彈出模態框的具體程式碼，供大家參考，具體內容如下

程式碼：

<view class="modals modals-bottom-dialog" hidden="{{hideModal}}" style="width:100%;height:{{widheight}}px">
 <view class="modals-cancel" bindtap="hideModal"></view>
 <view class="bottom-dialog-body bottom-pos" animation="{{animationData}}">
 <view class="comment_top">
  <view></view>
  <view class="comment_num">{{comment.length}}條評論</view>
  <view class="comment_close" bindtap="hideModal">×</view>
 </view>
 <view class="comment_list">
  <view class="comment_li" wx:for="{{comment}}" wx:key="{{index}}">
  <image class="comment_li_img" src="{{item.headpic}}"></image>
  <view class="comment_li_info">
   <view class="comment_li_name">{{item.nickname}}</view>
   <view class="comment_li_content">{{item.memo}}
   <text class="comment_li_date">9-24</text>
   </view>
  </view>
  </view>
 </view>
 <view class="comment_inputbox">
  <input class="comment_input" maxlength="120" adjust-position value="{{commentform}}" bindinput="commentinput" placeholder="有何高見，講來聽聽"></input>
  <view class="comment_sendbtn" bindtap="sendcomment">傳送</view>
 </view>
 </view>
</view>

CSS:

/* 評論 */
/*模態框*/
.modals{
 position:fixed;
 z-index: 100000;
 top:0; 
 left: 0; 
 right:0; 
 bottom: 0;
 }
.modals-cancel{
 position:absolute; 
 z-index:1000; 
 top:0; 
 left: 0; 
 right:0; 
 bottom: 0; 
 /* background-color: rgba(0,.5); */
 }
.bottom-dialog-body{
 width: 99%;
 margin: 0 auto;
 position:absolute; 
 z-index:10001; 
 bottom:0; 
 left:0; 
 right:0; 
 height:65%; 
 background-color: #fff;
 border-top-left-radius: 10rpx;
 border-top-right-radius: 10rpx;
 overflow: hidden;
 display: flex;
 flex-direction: column;
 }
/*動畫前初始位置*/
.bottom-pos{
 -webkit-transform:translateY(100%);
 transform:translateY(100%);
}
.comment_top{
 width: 100%;
 display: flex;
 justify-content: space-between;
 align-items: center;
 border-bottom: 1rpx solid #f2f2f2;
 padding: 10rpx 24rpx;
 box-sizing: border-box;
}
.comment_num{
 font-size: 30rpx;
}
.comment_close{
 font-size: 62rpx;
 line-height: 50rpx;
}
.comment_list{
 flex: 1;
 overflow: hidden;
}
.comment_li{
 display: flex;
 padding: 10rpx 24rpx;
 box-sizing: border-box;
}
.comment_li_img{
 width: 40rpx;
 height: 40rpx;
 border-radius: 50%;
 margin-right: 16rpx;
}
.comment_li_info{
 flex: 1;
}
.comment_li_name{
 font-size: 30rpx;
}
.comment_li_content{
 font-size: 28rpx;
}
.comment_li_date{
 color: #999;
 font-size: 24rpx;
 margin-left: 20rpx;
}
.comment_inputbox{
 display: flex;
 padding: 20rpx 24rpx;
 box-sizing: border-box;
 align-items: center;
 justify-content: space-between;
 border-top: 1rpx solid #f2f2f2;
}
.comment_input{
 font-size: 30rpx;
 flex: 1;
}
.comment_sendbtn{
 font-size: 30rpx;
 background: #dd5923;
 color: #fff;
 padding: 5rpx 18rpx;
 border-radius: 10rpx;
}

js:

Page({
 data: {
 hideModal: true,//模態框的狀態 true-隱藏 false-顯示
 animationData: {},},// 顯示遮罩層
 showModal: function () {
 var that = this;
 that.setData({
  hideModal: false
 })
 var animation = wx.createAnimation({
  duration: 600,//動畫的持續時間 預設400ms 數值越大，動畫越慢 數值越小，動畫越快
  timingFunction: 'ease',//動畫的效果 預設值是linear
 })
 this.animation = animation
 setTimeout(function () {
  that.fadeIn();//呼叫顯示動畫
 },200)
 },// 隱藏遮罩層
 hideModal: function () {
 var that = this;
 var animation = wx.createAnimation({
  duration: 800,//動畫的效果 預設值是linear
 })
 this.animation = animation
 that.fadeDown();//呼叫隱藏動畫 
 setTimeout(function () {
  that.setData({
  hideModal: true
  })
 },720)//先執行下滑動畫，再隱藏模組

 },//動畫集
 fadeIn: function () {
 this.animation.translateY(0).step()
 this.setData({
  animationData: this.animation.export()//動畫例項的export方法匯出動畫資料傳遞給元件的animation屬性
 })
 },fadeDown: function () {
 this.animation.translateY(300).step()
 this.setData({
  animationData: this.animation.export(),})
 },})

為大家推薦現在關注度比較高的微信小程式教程一篇：《微信小程式開發教程》小編為大家精心整理的，希望喜歡。

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支援我們。