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vant-waterfall's Introduction

Waterfall 瀑布流

安装

npm i @vant/waterfall -S

使用指南

全局注册

import Vue from 'vue';
import Waterfall from '@vant/waterfall';

Vue.use(Waterfall);

局部注册

如果你只是想在某个组件中使用Waterfall,可以在对应组件中注册Waterfall指令,这样只能在你注册的组件中使用Waterfall

import Waterfall from '@vant/waterfall';

export default {
  directives: {
    WaterfallLower: Waterfall('lower'),
    WaterfallUpper: Waterfall('upper')
  }
};

代码演示

基础用法

使用 v-waterfall-lower 监听滚动到达底部,并执行相应函数。若是函数执行中需要异步加载数据,可以将 waterfall-disabled 指定的值置为 true,禁止 v-waterfall-lower 监听滚动事件

注意:waterfall-disabled 传入的是 vue 对象中表示是否禁止瀑布流触发 key 值,类型是字符串

<ul
  v-waterfall-lower="loadMore"
  waterfall-disabled="disabled"
  waterfall-offset="400"
>
  <li v-for="item in list">{{ item }}</li>
</ul>
export default {
  data() {
    return {
      list: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
      disabled: false
    };
  },

  directives: {
    WaterfallLower: Waterfall('lower')
  },

  methods: {
    loadMore() {
      this.disabled = true;
      setTimeout(() => {
        for (let i = 0; i < 5; i++) {
          this.list.push(this.list.length);
        }
        this.disabled = false;
      }, 200);
    }
  }
};

API

参数 说明 类型 默认值 版本
v-waterfall-lower 滚动到底部, 触发执行的函数 Function - -
v-waterfall-upper 滚动到顶部, 触发执行的函数 Function - -
waterfall-disabled 在 vue 对象中表示是否禁止瀑布流触发的 key 值 String - -
waterfall-offset 触发瀑布流加载的阈值 Number 300 -

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