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wepy-preload-img

v1.0.0

Published

the preload image module of wepy

Downloads

12

Readme

wepy-preload-image -- 小程序图片加载组件

简介:

可用于图片的预加载, 类似于webnew 一个 Image 对象进行加载; 主要用于加载线上的图片;

相比于wx.previewImage或者wx.getImageInfo, 其主要是用于 确保图片已经加载进内存中, 可用于控制 :

  1. loading的展示与隐藏;
  2. 设置时可直接展示,不会看到图片片状加载;

更新:

使用姿势:

  1. 引用:

import MTPreload from 'wepy-preload-image';

  1. 添加 components:

components = { MTPreload };

  1. template 中使用:
<!-- 初始化时加载图片 -->
<MTPreload :loadList="loadList"></MTPreload>

两种使用姿势:

  1. 页面初始化时直接预加载:
    // 通过 loadList 传入组件;
    data: {
        loadList: ['url1', 'urls'],
    }
  1. js中使用:
// url: 图片地址;
// String/Array
this.$invoke('./MTPreload', 'load', urlArray, data=>{
    console.log('加载成功', data);
    // data = {
    //     url : url,
    //     width: 图片宽度,
    //     height: 图片高度,
    // }
}, error => {
    console.log('加载失败');
});