import{AsyncStorage}from'react-native';exportasyncfunctiongetVariable(){letvariable=awaitAsyncStorage.getItem("variable");returnvariable;} b.js import{getVariable}from'a.js';getVariable().then(v=>{//在这里获得模块a真正想导出的值}).catch(e=>{}) a文件中使用了ES7的async函数,async函数一旦执行会...
export function difference(x, y) { return x - y } // 匿名函数 export async function getBooks() {} // 类 export class Book { constructor(name, author) { this.name = name this.author = author } } // 实例化类 export const book = new Book('Lord of the Rings', 'J. R. R. To...
export function sum(x, y) { return x + y }export function difference(x, y) { return x - y }export function product(x, y) { return x * y }export function quotient(x, y) { return x / y } 在script.js中用import从前面的functions.js模块中检索代码。 注意:import必须始终位于文件的顶...
export async function myReq() { await getUrl(); return '123'; }
exportasyncfunctionsetMessage(){const{ getAssemblyExports } =awaitglobalThis.getDotnetRuntime(0);varexports =awaitgetAssemblyExports("BlazorSample.dll");document.getElementById("result").innerText = exports.BlazorSample.Components.Pages.CallDotNet1.GetMessageFromDotnet(); } ...
react export async function逆向传值在React中,逆向传值通常指的是父组件向子组件传递数据,而不是子组件向父组件传递数据。如果你想从子组件向父组件传递数据,你可以使用回调函数或者使用状态钩子(useState)来实现。 下面是一个使用回调函数实现逆向传值的示例: jsx import React, { useState } from 'react'; ...
9.async async 函数返回一个 Promise 对象,可以使用 then 方法添加回调函数 async function helloAsync(){ return "helloAsync"; } console.log(helloAsync()) // Promise {<resolved>: "helloAsync"} helloAsync().then(v=>{ console.log(v); // helloAsync ...
import 'https://mozilla.github.io/pdf.js/build/pdf.mjs'; export async function pdfToImages(b64, url) { var { pdfjsLib } = globalThis; pdfjsLib.GlobalWorkerOptions.workerSrc = '//mozilla.github.io/pdf.js/build/pdf.worker.mjs'; var images = []; let currPage = 1; var loadingTask...
"export default async function" adds an unnecessary parenthesis around the entire function: export default async function foo() { console.log('Hello, World'); } turns into: export default (async function foo() { console.log("Hello, World...
using a flag set to true after service call and in AfterViewChecked hook checking if the flag is true then do the concat and save, then reset the flag. This seems to work but seems not so ideal, as AfterViewChecked is quite frequently called. If there's better way do export async ...