BetterScroll

## 安装
```
@better-scroll/scroll-bar
@better-scroll/mouse-wheel
@better-scroll/core
```

## 快速使用
```
<template>
  <div ref="wrapper" class="wrapper">
    <ul class="content">
      <li v-for="item in 30" :key="item">Item {{ item }}</li>
    </ul>
  </div>
</template>

export default {
  name: 'ScrollComponent',
  mounted() {
    this.$nextTick(() => {
      new BScroll(this.$refs.wrapper, {
        scrollY: true,
		mouseWheel: {
			speed: 20,
			invert: false,
			easeTime: 300
		},
		scrollbar: {
			fade: true,
			interactive: true,
			scrollbarTrackClickable: true,
		}
      })
    })
  },
}
</script>

## 常用方法
| 方法 | 作用 |
| ---- | --- |
| refresh() | 刷新滚动条 |
| enable() | 启用滚动条 |
| disable() | 禁用滚动条 |
| destroy() | 销毁滚动条 |
| scrollTo(x, y, time, easing, extraTransform) | 滚动到指定距离 |

BetterScroll

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