node.js

问题 var test = function(a, b) { return a + b; }; setTimeout(test(2, 3), 3000); it shows some type error 回答1: There are at least two ways to achieve this. The first one just fires the test function inside of a new anonymous function passed as callback to the setTimout . The second one uses .bind to partially apply the test function. var test = function(a, b) { console.log(a + b); return a + b; }; setTimeout(() => { test(2, 3); }, 3000); setTimeout(test.bind(null, 2, 3), 3000); And if you don't

问题 var test = function(a, b) { return a + b; }; setTimeout(test(2, 3), 3000); it shows some type error 回答1: There are at least two ways to achieve this. The first one just fires the test function inside of a new anonymous function passed as callback to the setTimout . The second one uses .bind to partially apply the test function. var test = function(a, b) { console.log(a + b); return a + b; }; setTimeout(() => { test(2, 3); }, 3000); setTimeout(test.bind(null, 2, 3), 3000); And if you don't

问题 This is the first time I'm using tedious.js , I still don't understand it a lot. I'm mostly going over their documentation here. Following is the logic in the POST method. Check if the tag already exists for the given statement id If the tag exists, return the message to the client If the tag doesn't exist, insert the tag in the database. This is my post method in express.js to add "tag" // POST add tags router.post('/tag', function(req, res){ // get the body const data = req.body; // sql

问题 I am configuring Mongoose to work on an existing MongoDB, that has these two collections: Users - with fields: _id: ObjectId name: String org_id: ObjectId Organizations - with fields: _id: ObjectId name: String I want to be able to populate a User document by Organization data. So I've created these two Models: const userSchema = new Schema({ name: String, org_id: { type: Schema.Types.ObjectId, ref: 'Organization', }, }); const User = mongoose.model('User', userSchema); const

问题 I am getting the following error when trying to host an application in Windows IIS using IISNode. iisnode encountered an error when processing the request. HRESULT: 0x2 HTTP status: 500 HTTP subStatus: 1002 HTTP reason: Internal Server Error You are receiving this HTTP 200 response because system.webServer/iisnode/@devErrorsEnabled configuration setting is 'true'. In addition to the log of stdout and stderr of the node.exe process, consider using debugging and ETW traces to further diagnose

问题 I am getting the following error when trying to host an application in Windows IIS using IISNode. iisnode encountered an error when processing the request. HRESULT: 0x2 HTTP status: 500 HTTP subStatus: 1002 HTTP reason: Internal Server Error You are receiving this HTTP 200 response because system.webServer/iisnode/@devErrorsEnabled configuration setting is 'true'. In addition to the log of stdout and stderr of the node.exe process, consider using debugging and ETW traces to further diagnose

问题 I've migrated a project from Node 6 to Node 10 and in the process made some changes and version upgrades which resulted in failing test cases and whatever fixes I tried, the test are still failing on "ReferenceError: Zone is not defined" I've tried changing the versions of different dependencies incrementally from basic to latest and still the tests would not pass. Here is the Package json: "scripts": { "ng": "ng", "start": "ng serve", "build": "ng build", "build:prod": "ng build --prod --env

问题 I'm using simply like below: class Bot { constructor(token) { let _baseApiURL = `https://api.telegram.org`; //code here } getAPI(apiName) { return axios.get(`${this.getApiURL()}/${apiName}`); } getApiURL() { return `${this.getBaseApiUrl()}/bot${this.getToken()}`; } getUpdates(fn) { this.getAPI('getUpdates') .then(res => { this.storeUpdates(res.data); fn(res.data); setTimeout(() => { this.getUpdates(fn); }, 1000); }) .catch(err => { console.log('::: ERROR :::', err); }); } } const bot = new

问题 I'm using simply like below: class Bot { constructor(token) { let _baseApiURL = `https://api.telegram.org`; //code here } getAPI(apiName) { return axios.get(`${this.getApiURL()}/${apiName}`); } getApiURL() { return `${this.getBaseApiUrl()}/bot${this.getToken()}`; } getUpdates(fn) { this.getAPI('getUpdates') .then(res => { this.storeUpdates(res.data); fn(res.data); setTimeout(() => { this.getUpdates(fn); }, 1000); }) .catch(err => { console.log('::: ERROR :::', err); }); } } const bot = new

问题 I'm using simply like below: class Bot { constructor(token) { let _baseApiURL = `https://api.telegram.org`; //code here } getAPI(apiName) { return axios.get(`${this.getApiURL()}/${apiName}`); } getApiURL() { return `${this.getBaseApiUrl()}/bot${this.getToken()}`; } getUpdates(fn) { this.getAPI('getUpdates') .then(res => { this.storeUpdates(res.data); fn(res.data); setTimeout(() => { this.getUpdates(fn); }, 1000); }) .catch(err => { console.log('::: ERROR :::', err); }); } } const bot = new