第一手 Taste of React Hooks: useState & useEffect

需要 React 16.7.0 以上: import React, {useState,useEffect} from 'react'; import ReactDOM from 'react-dom'; let histories = []; const App = function(props) ... ...

User Redux on React without Using React-Redux 小例子

一个小例子 to play around React-Redux: import React from 'react'; import ReactDOM from 'react-dom'; import { createStore } from 'redux' let initialState = ... ...

另一个HIGHER ORDER COMPONENT的例子,含Anonymous Class

如下: import React from 'react'; import ReactDOM from 'react-dom'; const Btn = function(props){ return ( <button onClick={() => alert(props.messag ... ...

全纽约最简单的React Higher Order Component例子

代码: import React from 'react'; import ReactDOM from 'react-dom'; const X = (props) => { return <div>Colin</div>; } const Y = (props) =& ... ...

Higher Order Function in Javascript

It is a function to blueprint another functions: //Higher order function function multiplier(n){ return function(base){ return base*n; } } var doubler ... ...

一个简单的例子来使用ES6的Promise

一个简单的例子来使用ES6的Promise object. var p = new Promise(function(resolved,rejected){ var random = Math.floor(Math.random() * Math.floor(2)); console.log(ran ... ...

简单的解说如何使用 call, apply, bind

简单的解说如何使用 call, apply, bind. function func(y,z){ console.log(this.x,y,z); } var obj = {x:1}; //Use Call: //(It executes right away) //Output 1, undefi ... ...

Tech Interview Exam Question: Delete Node in a BST (Hard Core!)

Given a root node reference of a BST and a key, delete the node with the given key in the BST. Return the root node reference (possibly updated) of th ... ...

Tech Interview Exam Question: Given a linked list, determine if it has a cycle in it.

Given a linked list, determine if it has a cycle in it. To represent a cycle in the given linked list, we use an integer pos which represents the posi ... ...

Javascript Tech Interview Question: Add 2 Big-Integer Strings

Given two non-negative integers num1 and num2 represented as string, return the sum of num1 and num2. Note: The length of both num1 and num2 is < 5100 ... ...