微信小程序实现左侧滑栏

旧城等待， 2022-09-04 07:44 132阅读 0赞

[https://www.cnblogs.com/numen-fan/p/11341548.html][https_www.cnblogs.com_numen-fan_p_11341548.html]

![动画][663ea0ebae7acb173c192268eaa6cfe6.gif]

1 wxms

<view>
    
      <view class="page-slidebar">
        <view class="page-content">
          <view class="userinfo">
            <button wx:if="{
       {!hasUserInfo && canIUse}}" open-type="getUserInfo" bindgetuserinfo="getUserInfo"> 点击获取头像昵称 </button>
            <block wx:else>
              <image bindtap="bindViewTap" class="userinfo-avatar" src="{
       {userInfo.avatarUrl}}" mode="cover"></image>
              <text class="userinfo-nickname">{
       {userInfo.nickName}}</text>
            </block>
          </view>
          <view class="account-info">
            <view class="account-info-item">用户：{
       {YHMC}}</view>
            <view class="account-info-item">账号：{
       {YHZH}}</view>
            <view class="account-info-item">角色：{
       {YHJS}}</view>
            <view class="account-info-item">版本：{
       {version}}</view>
          </view>
          <view>
            <view class='quit-view'>
              <button class='quit-btn' bindtap='quit'>退出登录</button>
            </view>
          </view>
        </view>
      </view>
    
      <view bindtouchmove="tap_drag" bindtouchend="tap_end" bindtouchstart="tap_start" class="page-top {
       {open ? ['c-state','cover'] : ''}} ">
        <view class="usermotto">
          <text class="user-motto">{
       {motto}}</text>
        </view>
      </view>
      
      <view bindtap="openSlider">
        <image class="floatbutton {
       {open ? 'c-button-open' : '' }}" src="../../img/floatbutton.png"></image>
      </view>
    </view>

2 js

// 点击左下角小图标事件
      openSlider: function (e) {
        if (this.data.open) {
          this.setData({
            open: false
          });
        } else {
          this.setData({
            open: true
          });
        }
      },
      tap_start: function (e) {
        // touchstart事件
        // 把手指触摸屏幕的那一个点的 x 轴坐标赋值给 mark 和 newmark
        this.data.mark = this.data.newmark = e.touches[0].pageX;
      },
      tap_drag: function (e) {
        // touchmove事件
        this.data.newmark = e.touches[0].pageX;
        // 手指从左向右移动
        if (this.data.mark < this.data.newmark) {
          this.istoright = true;
        }
        // 手指从右向左移动
        if (this.data.mark > this.data.newmark) {
          this.istoright = false;
        }
        this.data.mark = this.data.newmark;
      },
      tap_end: function (e) {
        // touchend事件
        this.data.mark = 0;
        this.data.newmark = 0;
        // 通过改变 opne 的值，让主页加上滑动的样式
        if (this.istoright) {
          this.setData({
            open: true
          });
        } else {
          this.setData({
            open: false
          });
        }
      }

3css

/**index.wxss**/
    .userinfo {
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    
    .userinfo-avatar {
      width: 128rpx;
      height: 128rpx;
      margin: 20rpx;
      border-radius: 50%;
    }
    
    .userinfo-nickname {
      color: #aaa;
    }
    
    .account-info {
       margin-top: 50rpx;
    }
    .account-info-item {
      display: flex;
      align-items: center;
      height: 54px;
      margin-left: 10rpx;
      border-bottom: 1px solid #eee;
    }
    
    
    /* 侧边栏样式 */
    .page-slidebar {
        height: 100%;
        width: 65%;
        position: fixed;
        background-color:white;
        z-index: 0;
    }
     /* 主页样式 */
    .page-top {
        height: 100%;
        position: fixed;
        width: 100%;
        background-color:white;
        z-index: 0;
        transition: All 0.4s ease;
        -webkit-transition: All 0.4s ease;
    }
    
    /* 控制侧边栏的内容距离顶部的距离 */
    .page-content {
        padding-top: 60rpx;
    }
    
    /* 当屏幕向左滑动，出现侧边栏的时候，主页的动画样式 */
    /* scale：取值范围 0~1 ，表示屏幕大小是原来的百分之几，可以自己修改成 0.8 试下*/
    /* translate(60%,0%) 表示向左滑动的时候，侧边栏占用平时的宽度为 60%   */
    .c-state {
        transform: rotate(0deg) scale(1) translate(65%, 0%);
        -webkit-transform: rotate(0deg) scale(1) translate(65%, 0%);
    }
    
    .floatbutton {
      position: fixed;
      width: 100rpx;
      height: 100rpx;
      bottom: 140rpx;
      left: 40rpx;
      z-index: 9999;
    }
    
    .c-button-open {
      transform: rotate(180deg) scale(1) translate(65%, 0%);
      -webkit-transform: rotate(180deg) scale(1) translate(65%, 0%);
      transition-duration:0.5s;
      -webkit-transition-duration: 0.5s;
      left: 60%;
    }
    
    /* 遮盖层样式 */
    .cover{
        width: 100%;
        height: 100%;
        background-color:gray;
        opacity: 0.5;
        z-index: 9000;
    }
    
    .quit-view {
      height: 5%;
      width: 65%;
    }
    
    .quit-btn {
      position: fixed;
      bottom: 5rpx;
      z-index: 999;
      color: #fff;
      width: 65%;
      border-radius: 5rpx;
      background-color: #064acb;
    }

[https_www.cnblogs.com_numen-fan_p_11341548.html]: https://www.cnblogs.com/numen-fan/p/11341548.html
[663ea0ebae7acb173c192268eaa6cfe6.gif]: /images/20220829/5505d3d2d11b4396abb8dd29242a45ec.png