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uni-app-core-js

v1.0.0

Published

Polyfill Library For uni-app

Downloads

20

Readme

uni-app-core-js fork from core-js

get more information with origin core-js@2

此兼容库仅用于uni-app(基于[email protected])

仅支持对目标浏览器的对象进行实例/静态方法的兼容

如:

// 一定兼容的情况
[].find(v=>v>1) // 可兼容(因为基本上任何浏览器都支持Araay)
Object.assign({}, { a: 1 }) // 可兼容(因为基本上任何浏览器都支持Object)
// 可能兼容的情况
// (关于"可能"的解释见下文)
// eg.1
new Promise(function(resolve){
  resolve()
}).finally(function(){
  console.log('finally')
})
// eg.2
const set = new Set()
set.add(1)

关于可能兼容的说明(针对类似小程序拿不到全局变量的情况)

取决于 目标浏览器(webview) 是否支持相关对象/构造函数/数据类型 比如,浏览器支持Promise,但是不支持Promise.prototype.finally 那么可以为Promise加上finally兼容 但是浏览器(webview)不支持Promise,就没办法给浏览器(webview)添加Promise兼容(Set等其他es6新api同理) 因为类似小程序端没办法像网页端那样拿到全局变量(比如window) 所以即使有相关兼容的代码,也加不到全局作用域里去

如果确定目标浏览器不支持Promise的话,可以直接在github上找相关兼容库,直接进行import 如Promise:https://github.com/then/promise