CODDING CHALLENGE 1 John and Mike both play backetball in different teams. In the lastest 3 games, John’s team scored 89, 120 and 130 points, while Mike’s team scored 116, 96 and 123 point. Calculate the average score for each team.Decide which teams w…

What’s function A JavaScript function is a block of code designed to perform a particular task. A JavaScript function is executed when “something” invokes it (calls it). JavaScript Function Syntax: A JavaScript function is defined with the function k…

Falsy VS Truthy Value and VS Falsy values: undefined, null, 0, ‘’, NaNTruthy values: Not falsy values var height;if (height) {console.log(Variable is defined);} else {console.log(Variable has NOT been defined);}In this code above, the result is: Vari…

Section 2.6 讲解了Object的创建，object的property属性。 这节我们讲 Object 和 Methods的关系。 Object不仅仅可以储存property，同样可以保存methods。而且，只有object可以引入方法。 Very basic method in object. only object has metho…

Let’s remember the first coding challenge where Mark and John compared their BMI. Let’s now implement the same functionality with objects and methods. for each of them, create an object with properties for their full name mass, and height.then, add a me…

每个object,都可以储存不同类型的value 格式一般是key：value， 而value可以为number, string, Array, boolean 等等。 var alan {firstName: Alan, //key:valuelastName: Ning,birthYear: 1990,family:[Faye, Aiden, Nison],job: Front-end Developer,i…

JavaScript Leaning Notes 大家好，今天开始，我将会开始分享我学习JavaScript的经验。如有不足，请大神们指教！谢谢 This note is what I learned from “The Complete JavaScript Course 2018: Build Real Projects”. 此次学习笔记是通过学习 “The Complete JavaScript …

21面向对象编程的理解 类和实例，属性，方法，封装，继承，多态 类：Person 定义一个人的类 实例：p，p1 具体到某个人就是实例 类方法： 实例方法： 类方法实例可以调用 实例方法，类不可以调用 类的表示方法： class 类名: # 成员属性# 成员方法类的声明必须使用cl…