varasync=require('async');async.series([function(callback){setTimeout(function(){console.log('event A occurs')callback(null,'A')// 第一个参数是异常错误,第二个参数是返回值},3000)},function(callback){console.log('event B occurs');callback(null,'B')}],function(err,results){// result...
module.exports=EventEmitter;module.exports.on=on;functionon(emitter,event){constunconsumedEvents=[];constunconsumedPromises=[];constiterator=ObjectSetPrototypeOf({// {1}next(){...},return(){...},throw(err){...},[SymbolAsyncIterator](){// {2}returnthis;}},AsyncIteratorPrototype);// {3}...
App({onLaunch:asyncfunction(){wx.cloud.init({// env: "其他云开发环境,也可以不填" // 此处init的环境ID和微信云托管没有作用关系,没用就留空});constres=awaitwx.cloud.callContainer({config:{env:"微信云托管ID",// 微信云托管环境ID,不能为空,替换自己的},path:'/',method:'GET',header:{'...
基于getStaticProps对不需要权限的内容进行预加载,它将在 NextJS 构建时被编译到页面中,减少了 http 请求数量 functionBlog({ posts }){return({posts.map((post) => ({post.title}))}) }exportasyncfunctiongetStaticProps(){constres =awaitfetch('https://.../posts')constposts =awaitres.json()return{...
Here is some example text. We will read this file with Node.js. 步骤2: 编写 Node.js 脚本 接下来,撰写一个简单的 Node.js 脚本文件来处理data.txt: const fsp = require('fs').promises; async function processFile() { try { const content = await fsp.readFile('data.txt', 'utf8'); ...
const CDP = require('chrome-remote-interface'); async function example() { let client; try { // connect to endpoint client = await CDP(); // extract domains const {Network, Page} = client; // setup handlers Network.requestWillBeSent((params) => { console.log(params.request.url); }...
(async function(a) { (function() { var b = await => console.log("PASS"); b(); })(); })().catch(console.error); // Expected: "PASS" // Actual: SyntaxError: Unexpected reserved word UglifyJS may modify the input which in turn may suppress those errors. Later versions of Chrome...
CommonJS module example 例–ES 模块处理程序 const url = "https://aws.amazon.com/"; export const handler = async(event) => { try { const res = await fetch(url); console.info("status", res.status); return res.status; } catch (e) { console.error(e); return 500; } };包含...
function(err, result) { do_something_with_result(); } ) executeMany 参数 sql(String):SQL 或 PL/SQL 语句,必须包含绑定变量 binds(Array):绑定参数,按照名称绑定时,为 JS 对象组成的 Array 数组,按照位置绑定时,为 Array 数组组成的 Array 数组 ...
bucket:'examplebucket'});asyncfunctionget() {try{// 填写Object完整路径和本地文件的完整路径。Object完整路径中不能包含Bucket名称。// 如果指定的本地文件存在会覆盖,不存在则新建。// 如果未指定本地路径,则下载后的文件默认保存到示例程序所属项目对应本地路径中。constresult =awaitclient.get('example...