微信小程序自定义组件实现类似Modal的弹框

客官°小女子只卖身不卖艺 2023-07-01 06:23 6阅读 0赞

**效果展示：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ_size_16_color_FFFFFF_t_70][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ_size_16_color_FFFFFF_t_70 1][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ_size_16_color_FFFFFF_t_70 2][]

**思路：**

在项目中，我们会遇到这样的情况，以上的的弹框都是类似的，我们不需要每个页面都写个弹框+背景。这样很是麻烦和繁琐。

不如我们拆分成这样，弹框（组件）+弹框内容（slot）。

**组件代码：**

.wxml：

<block wx:if="{
       {isShowInvite}}">
      <cover-view class="alert_bg" bindtap="_alertClose"></cover-view>
      <cover-view class="alert_invite_wrap">
        <cover-view class="alert_invite">
          <cover-view class="alert_invite_tit">{
       {title}}</cover-view>
          <slot name="rules"></slot>
          <slot name="twobutton"></slot>
          <cover-view class="bottom_tit">{
       {bottomTxt}}</cover-view>
        </cover-view>
        <cover-image src="{
       {iconClose}}" class="icon_close" bindtap="_alertClose"></cover-image>
      </cover-view>
    </block>

.wxss：

.alert_bg{
      position: fixed;
      left: 0;
      right: 0;
      top: 0;
      bottom: 0;
      background: rgba(0,0,0,.8);
      z-index: 99999;
    }
    .alert_invite_wrap{
      width: 80%;
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%,-50%);
      z-index: 999999;
    }
    .alert_invite{
      width: 100%;
      background-color: #fff;
      border-radius: 20rpx;
      padding:50rpx;
      box-sizing: border-box;
      overflow: initial;
    }
    /* .alert_invite_txt{
      width: 100%;
      font-size: 26rpx;
      color: #444444;
      line-height: 25px;
      white-space: pre-wrap;
      margin-bottom: 75rpx;
    } */
    .alert_invite_tit{
      font-weight: bold;
      font-size: 40rpx;
      color: #333333;
      margin-bottom: 55rpx;
    }
    .invite_btn{
      width: 100%!important;
      height: 80rpx;
      box-sizing: border-box;
      line-height: 80rpx;
      background: #ffcc21;
      border-radius: 50rpx;
      font-size: 30rpx;
      color: #444444;
    }
    .icon_close{
      width: 80rpx;
      height: 80rpx;
      margin:0 auto;
      margin-top: 80rpx;
    }
    .bottom_tit{
      font-size: 26rpx;
      color: #444444;
      text-align: center;
    }

.js:

Component({
      data: {
        iconClose: 'http://39.105.134.221:8080/test/source1.png' //需要后端将icon_close_white放在服务器上，这个暂时用播放的
      },
      options:{
        multipleSlots: true
      },
      properties: {
        title: {
          type: String,
          value: '邀请获下载券'
        },
        isShowInvite: {
          type: Boolean,
          value: false
        },
        bottomTxt:{
          type:String,
          value:''
        },
      },
      methods: {
        _alertClose() {
          this.setData({
            isShowInvite: false
          })
        }
      }
    })

pages页面使用该组件：

<alert-invite-rules id="inviteRules" title="没有下载券了" isShowInvite="{
       {isShowInvite}}">
        <view slot="rules">
          <view class="alert_invite_txt">{
       {couponTxt}}</view>
        </view>
        <view slot="twobutton">
          <button class="invite_btn" style="bottom:20px" hover-class="none">￥1买整套</button>
          <button class="invite_btn invite_btn_gray" hover-class="none" open-type="share">邀请获券</button>
        </view>
      </alert-invite-rules>

嗯嗯....

以上pages页面里面的<alert-invite-rules></alert-invite-rules>  就直接可以完成  弹框 + 弹框内容。这样就简洁了好多。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200119144723583.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200119144806748.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200119144847289.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L01pc3NfbGlhbmdybQ==,size_16,color_FFFFFF,t_70