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resource-preloader

v2.0.5

Published

浏览器端资源预加载工具,支持依赖处理、并行/顺序加载、自定义加载器

Readme

资源加载器

项目初衷: 为了在vue项目中,预加载某些资源,开发此加载器

需要动态使用字体图标时,需要加载某全部的字体图标库,然后将图标库类名存储到后端,显示时读取类名并设置实现动态图标。

加载时,想要先从CDN加载,如果失败,才从本地加载。

/** 加载器说明 **/
// 预制了 css js img json 加载器
// 结果类型:`Array<ResourceLoadResult>`

/** 加载配置说明 **/
const config = [
    // 必须有后缀,后缀和加载器名字一样
    'url',
    // url1 和 上面URL限制一样
    ['url1', 'url2'],
    // 加载a,类型为js的url,依次加载url1,url2,直到成功,默认超时时间1.5s
    {name:'a', type:'js', urls:['url1', 'url2']},
    // 加载b,类型为js的url,加载前先加载下面的配置c
    {name:'b', type:'js', urls:['url1', 'url2'], dependencies:['c']},
    {name:'c', type:'js', urls:['url1', 'url2']},
];
/** ESM **/
// 导入加载方法
import {resourcePreloader} from 'reource-preloader';
import resourcePreloader from 'reource-preloader';
// 导入配置设置
import {registerLoader} from 'reource-preloader';
import {setGlobalConfig} from 'reource-preloader';

为了和ESM感觉用起来一样,AMD、Commonjs、UMD 等默认导出的是加载方法

/** AMD/UMD(直接在浏览器中使用时,请引入requirejs) **/
require(['resource-preloader'], function (resourcePreloader) {
    // 加载器
    resourcePreloader([]);
    // 配置
    resourcePreloader.setGlobalConfig({timeout: 1500, retry: 0});
    resourcePreloader.registerLoader('name', function () {
        return Promise.reject('数据');
    });
});
/** CJS/UMD(直接在浏览器中使用时,需要使用 browserify 打包) **/
const resourcePreloader = require('resource-preloader');
// 加载器
resourcePreloader([]);
// 配置
resourcePreloader.setGlobalConfig({timeout: 1500, retry: 0});
resourcePreloader.registerLoader('name', function () {
    return Promise.reject('数据');
});