鳕鱼天空

This is Mr Wang's Tech Blog.

小程序slider多滑块

尊重劳动成果,转载请注明出处(https://blog.csdn.net/sllailcp/article/details/82595358)...

最近在用原生的代码开发小程序,需要用到多滑块的slider,但是官方的api只支持单滑块,所以就在原来的基础上草草的写了一个。有什么不足的地方还请大家多多指教,想封装成组件的也可自行封装,我这就不讲了。;

话不多说,上代码:

html:

<view class='sliderHCon'>
  <view class='showMoney'>
    <text class='MoneyValue'>¥{{leftShowValue}}</text>
    <text class='MoneyValue'>¥{{rightShowValue}}</text>
  </view>
 
  <view class='twoSlider'>
    <slider class='slider-left' min='{{Min}}' max='{{Max}}' value='{{leftValue}}' activeColor='#ccc' backgroundColor='#ccc' block-size='{{blockSize}}' step='{{step}}' bindchanging="leftChange" rightChange='leftChange'>
      <em class='slider-bg' style='left:{{setSliderLeftX}};width:{{setSliderWidthX}}'></em>
    </slider>
    <slider class='slider-right' min='{{Min}}' max='{{Max}}' value='{{rightValue}}' activeColor='#ccc' backgroundColor='#ccc' block-size='{{blockSize}}' step='{{step}}' bindchanging="rightChange" bindchange='rightChange'/>
  </view>
</view>
css
.sliderHCon {
  height: 250rpx;
  width: 100%;
  margin: auto;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
 
.MoneyValue {
  font-size: 30rpx;
  text-align: center;
  color: #999;
  margin-top: 15rpx;
}
 
.showMoney text {
  margin-right: 30rpx;
}
 
.twoSlider {
  width: 100%;
  height:100px;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  position: relative;
}
.slider-left,.slider-right{position: absolute;left:0;right:0;}
.slider-bg{position: absolute;top:50%;margin-top:-1px;left:0;width:100%;height:2px;background: blue;z-index: 9;}

js:

data: {
      blockSize:20,
      step:10,
      Min: 0, //最小值
      Max: 1000, //最大值
      leftValue: 0, //左边滑块默认值
      rightValue: 1000, //右边滑块默认值
      leftShowValue: 0, //界面显示左边滑块默认值
      rightShowValue: 1000, //界面显示右边滑块默认值
      leftWidth: '50', //左边滑块可滑动长度:百分比
      rightWidth: '50', //右边滑块可滑动长度:百分比
      sliderWidth:0, // slider的宽度;
      setSliderLeftX: 0, // 设置的sliderdiv的left
      setSliderWidthX: 0// 设置的sliderdiv的width
    },
 
onLoad(options) {
      var query = wx.createSelectorQuery(); // 如果是封装的组件的话,这边请注意写法不同哦;
      query.select('.slider-left').boundingClientRect((rect) => {        
        this.setData({
          sliderWidth: rect.width,
          setSliderLeftX: (rect.width / this.data.Max * this.data.leftValue) + this.data.blockSize/2 + 'px',
          setSliderWidthX: rect.width / this.data.Max * (this.data.rightValue - this.data.leftValue) - this.data.blockSize + 'px',
        })
        
      }).exec();
        
    },
 
 // 左边滑块滑动的值
  leftChange(e){
    
    var that = this;
    that.setData({
      leftValue: e.detail.value //设置左边当前值
    })
    this.setSliderBgColor(e,'left');
  },
  // 右边滑块滑动的值
  rightChange: function (e) {
    var that = this;
    that.setData({
      rightValue: e.detail.value,
    })
    this.setSliderBgColor(e, 'right');
  },
 
  setSliderBgColor(e, type){
      if (type == 'left') { // 左边
        if (this.data.leftValue < this.data.rightValue) {
          console.log('拖左不超右边');
          this.setData({ 
            leftShowValue: e.detail.value,
          })
          this.setData({ 
            rightShowValue: this.data.rightValue,
          })
        } else {
          console.log('拖左超右边');
          this.setData({ 
            leftShowValue: this.data.rightValue,
          })
          this.setData({ 
            rightShowValue: e.detail.value,
          })
        }
      } else { // 右边
        if (this.data.leftValue < this.data.rightValue) {
          console.log('拖右不超右边');
          this.setData({ 
            rightShowValue: e.detail.value,
          })
          this.setData({
            leftShowValue: this.data.leftValue,
          })
        } else {
          console.log('拖右超右边')
          this.setData({ 
            leftShowValue: e.detail.value,
          })
          this.setData({ 
            rightShowValue: this.data.leftValue,
          })
        }
      }
 
 
     const v = this.data.sliderWidth / this.data.Max 
      
      if (v * (this.data.rightShowValue - this.data.leftShowValue) - this.data.blockSize >= 0) {
        this.setData({
          setSliderLeftX: (v * this.data.leftShowValue) + this.data.blockSize / 2 + 'px',
          setSliderWidthX: v * (this.data.rightShowValue - this.data.leftShowValue) - this.data.blockSize + 'px',
        })
       // console.log(1)
      } else {
        this.setData({
          setSliderLeftX: (v * this.data.leftShowValue) + this.data.blockSize / 2 + 'px',
          setSliderWidthX: 0 + 'px',
        })
     
      }
    
   
  }

效果图如下(支持点击,拖动),觉得不错的,请给博主一个赞哦。:

--------------------- 本文来自 darkblueLove 的CSDN 博客 ,全文地址请点击:https://blog.csdn.net/sllailcp/article/details/82595358?utm_source=copy

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