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Javascript 2022-03-22 13:20:11
creating room in ws node js
const rooms = {}; wss.on("connection", socket => { const uuid = ...; // create here a uuid for this connection const leave = room => { // not present: do nothing if(! rooms[room][uuid]) return; // if the one exiting is t... Add solution -
Javascript 2022-03-18 07:30:11
reverse keys and values in object javascript
//The concise way by using ES6 syntax like this. const obj = {A : 1, B : 2, C : 3, D : 4} function objectFlip(obj) { return Object.entries(obj).reduce((acc, [key, value]) => (acc[value] = key, acc), {}) } console.log('input: ',obj); console.lo... Add solution -
Javascript 2022-03-11 05:30:33
javascript for group object properties based on another property
var list = [ { date: "2017-01-01", type: "type1", amount: 100 }, { date: "2017-01-01", type: "type2", amount: 150 }, { date: "2017-01-02",... Add solution -
Javascript 2022-02-18 10:55:26
js find key by value in object
function getKeyByValue(object, value) { return Object.keys(object).find(key => object[key] === value); } const map = {"first" : "1", "second" : "2"}; console.log(getKeyByValue(map,"2")); Add solution