移动端悬浮框可移动，可回弹，Vue and React

npm install suspend-button -S

import React, { Component } from ‘react‘
import ReactDOM from ‘react-dom‘
import SuspendButton from ‘suspend-button‘

class App extends Component {
  render() {
    return (
      <SuspendButton></SuspendButton>
    )
  }
}

ReactDOM.render(
  <App />,
  document.getElementById(‘container‘)
)

<template>
  <div class="removeHome">
    <span class="t-suspend-button"
          @touchstart="onTouchStart"
          @touchmove="onTouchMove"
          @touchend="onTouchEnd"
          ref="remove"
          :style="`left: ${oLeft}px; top: ${oTop}px;`">

      <div class="yuanqiu"
           @click="$router.replace({path: ‘/‘})">
        <img :src="img" />
      </div>
    </span>
  </div>
</template>

<script>
export default {
  props: {
    img: {
      type: String,
      default: ""
    }
  },
  data() {
    return {
      oLeft: "",
      oTop: "",
      $vm: null, // 悬浮按钮
      moving: false, // 移动状态
      oW: null, // 悬钮距离
      oH: null,
      htmlWidth: null, // 页面宽度
      htmlHeight: null,
      bWidth: null, // 悬钮宽度
      bHeight: null,
      click: false // 是否是点击
    };
  },
  mounted() {
    this.$refs.remove.addEventListener(
      "touchmove",
      e => {
        if (e.cancelable) {
          e.preventDefault();
        }
      },
      { passive: false }
    );
  },
  methods: {
    // 移动触发
    onTouchStart(e) {
      e = e.touches[0];
      this.click = true;

      this.oW = e.clientX - this.$refs.remove.getBoundingClientRect().left;
      this.oH = e.clientY - this.$refs.remove.getBoundingClientRect().top;

      console.log("e.clientX宽", e.clientX, "e.clientY高", e.clientY);

      console.log(
        "移动宽",
        this.$refs.remove.getBoundingClientRect().left,
        "移动高",
        this.$refs.remove.getBoundingClientRect().top
      );

      this.htmlWidth = document.documentElement.clientWidth;
      this.htmlHeight = document.documentElement.clientHeight;

      console.log("body宽", this.htmlWidth, "body高", this.htmlHeight);

      this.bWidth = this.$refs.remove.offsetWidth;
      this.bHeight = this.$refs.remove.offsetHeight;

      console.log("a宽", this.oW, "a高", this.oH);

      let oLeft = e.clientX - this.oW;
      let oTop = e.clientY - this.oH;

      this.oLeft = oLeft;
      this.oTop = oTop;

      this.moving = true;
    },
    // 移动结束
    onTouchEnd(e) {
      this.moving = false;

      this.$refs.remove.class + " t-suspend-button-animate";

      // 左侧距离
      let oLeft = this.oLeft;
      if (oLeft < (this.htmlWidth - this.bWidth) / 2) {
        oLeft = 0;
      } else {
        oLeft = this.htmlWidth - this.bWidth;
      }

      // if (this.click) {
      //   this.props.onClick();
      // }
      // }
      // if (oTop < 0) {
      //   oTop = 0;
      // } else if (oTop > this.htmlHeight - this.bHeight) {
      //   oTop = this.htmlHeight - this.bHeight;
      // }

      this.oLeft = oLeft;
    },
    // 开始移动
    onTouchMove(e) {
      this.$refs.remove.class = "t-suspend-button";
      this.moving && this.onMove(e);
    },
    // 移动中
    onMove(e) {
      e = e.touches[0];
      this.click = false;

      // 左侧距离
      let oLeft = e.clientX - this.oW;
      let oTop = e.clientY - this.oH;
      console.log("移动左距离", oLeft, "移动上距离", oTop);
      if (oLeft < 0) {
        oLeft = 0;
      } else if (oLeft > this.htmlWidth - this.bWidth) {
        oLeft = this.htmlWidth - this.bWidth;
      }
      if (oTop < 0) {
        oTop = 0;
      } else if (oTop > this.htmlHeight - this.bHeight) {
        oTop = this.htmlHeight - this.bHeight;
      }

      this.oLeft = oLeft;
      this.oTop = oTop;
    }
  }
};
</script>

<style lang="scss">
.removeHome {
  .t-suspend-button {
    position: fixed;
    bottom: 105px;
    right: 9px;
    width: 3rem;
    height: 3rem;
    border-radius: 2rem;
    z-index: 99999;
  }

  .t-suspend-button img {
    width: 100%;
    height: 100%;
  }

  .t-suspend-button-animate {
    transition-duration: 0.4s;
  }
  .yuanqiu {
    width: 48px;
    height: 48px;
    img {
      width: 100%;
      height: 100%;
    }
  }
}
</style>