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Other 2022-03-10 02:40:09
on click unmount the component
import React, { useEffect, useState } from 'react'; import ReactDOM from 'react-dom'; function LifecycleDemo() { // Pass useEffect a function useEffect(() => { // This gets called after every render, by default // (the first one, and every... Add solution -
Python 2022-03-03 05:15:16
random choice without random module
# First let's make a function that makes a random number def randint(a, b): "Return random integer in range [a, b], including both end points." return a + randbelow(b - a + 1) def randbelow(n): "Return a random int in the ran... Add solution -
Javascript 2022-02-16 23:25:09
react current date and time command
import React, { Component } from 'react';import { render } from 'react-dom'; class App extends Component { constructor() { this.state = { currentDateTime: Date().toLocaleString() } } render() { return ( <div> <p&g... Add solution -
Javascript 2022-02-16 16:00:28
react router Link does work
import { Link } from 'react-router-dom'; Add solution -
Other 2022-02-13 19:40:07
React tottural
import React from 'react' import ReactDOM from 'react-dom' import ReactBootstrap from 'react-bootstrap' import { ListGroup } from 'react-bootstrap' import { ListGroupItem } from 'react-bootstrap' import { Panel } from 'react-bootstrap' import { ButtonGrou... Add solution -
Javascript 2022-02-02 23:01:05
multiple async api calls javascript
// store urls to fetch in an array const urls = [ 'https://dog.ceo/api/breeds/list', 'https://dog.ceo/api/breeds/image/random' ]; // use map() to perform a fetch and handle the response for each url Promise.all(urls.map(url => fetch(url) .th... Add solution -
Javascript 2022-02-02 22:06:52
react route
import React, { Component } from 'react'; import { render } from 'react-dom'; import { BrowserRouter, Route, Switch, Link } from 'react-router-dom'; import { Home } from 'wherever-you-put-it/home.component.jsx'; import { Something } from 'wherever-you-put... Add solution