sticky-demo.we

<style>
  .top {
    width: 750;
    height: 200px;
  }
  .ct {
    width: 750;
    height: 1000;
  }
  .content {
    width: 750;
    height: 1000px;
    background-color: green;
  }
  .header {
    width: 750;
    height: 80;
  }
  .header1 {
    background-color: yellow;
  }
  .header2 {
    background-color: red;
    height: 200px;
  }
  .fixed1 {
    color: #fff;
    position: fixed;
    width: 300px;
    height: 100px;
    background-color: #999;
    border: 1px solid #666;
    z-index: 999;
  }
  .fixed2 {
    color: #fff;
    position: fixed;
    top: 300px;
    width: 300px;
    height: 100px;
    background-color: #999;
    border: 1px solid #666;
    z-index: 999;
  }
</style>

<template>
  <div>
    <div class="top"></div>
    <scroller class="ct">
      <div class="fixed1" style="position:{{fixPosition}};top:{{fixTop}};" onclick="toggleSticky"><text>TOGGLE STICKY</text></div>
      <div class="fixed2" onclick="toggleFixed"><text>TOGGLE FIXED</text></div>
      <div class="content"></div>
      <div class="header header1" style="position:{{position}}"></div>
      <div class="content"></div>
      <div class="header header2" style="position:{{position}}"></div>
      <div class="content"></div>
      <div class="content"></div>
    </scroller>
  </div>
</template>

<script>
  module.exports = {
    data: {
      position: 'sticky',
      fixPosition: 'fixed',
      fixTop: 100,
    },
    methods: {
      toggleSticky: function () {
        this.position = this.position === 'sticky' ? 'relative' : 'sticky'
      },
      toggleFixed: function () {
        const nextPosition = this.fixPosition === 'fixed' ? 'relative' : 'fixed'
        this.fixPosition = nextPosition
        this.fixTop = nextPosition === 'fixed' ? 50 : 0
      }
    }
  }
</script>