Life is Possible - 生命教育 手機程式工作坊

let str = "reemo"
console.log("Hello all");
console.log(str);
console.log("This is " + str);

console.log("Hello world"); // "Hello world"
console.log("Hello " + "Peter"); // "Hello Peter"
console.log("Hello", "Peter"); // "Hello Peter"
 
console.log(100); // 100
console.log(100 + 45); // 145

// I will not run
// console.log("Hello")
// Hello mate
 
console.log("yo hi")

/*
Hello
This is multi line comments
I can contains a lot of stuff
in the same block
console.log("Yoooo")
*/
 
console.log("mate")

13 == 100 // Is 13 equal to 100 ? false
100 > 50  // Is 100 bigger than 50 ? true
0 < 2     // Is 0 smaller than 2 ? true
 
"tom"   == "hello tom" // Is "tom" equal to "hello tom" ? false
"apple" == "apple"   // Is "apple" equal to "apple" ? true

如果(If)今天是星期一，且(and)天氣沒有下雨，那麼我會去彼得家。

if(today.day == "monday" && today.weather != "raining"){
    goToPeterHome();
}

這是湯姆。嘿，彼得，我想跟你玩一個遊戲。
從1到6猜一個數字，我會開始擲骰子。
 
如果數字是偶數且是1或6，你將贏得遊戲。
如果數字是偶數但是是4，你將輸。
但如果數字是奇數，你會輸。
但如果數字是奇數且是3，你將贏得遊戲。

// let assume this function will return a random number of 1 to 6
let diceNumber = randomDiceNumber(); 
 
if(diceNumber % 2 == 0 && diceNumber == 4){
    lose()
}
else if(diceNumber % 2 == 0 && (diceNumber == 1 || diceNumber == 6)){
    win()
}
else if(diceNumber % 2 == 1 && diceNumber == 3){
    win()
}
else if(diceNumber % 2 == 1){
    lose()
}

var names = "reemo";
let age = 123;
const isMale = true;

// <declare_words> <declare_variables_name> = <data_values>
let names = "reemo";
const age = 10;

let names = "reemo";
console.log(names) // reemo
 
names = "tom"
console.log(names) // tom

const names = "reemo";
console.log(names) // reemo
 
names = "tom" // Cannot assign to 'names' because it is a constant.
console.log(names) // error: Uncaught TypeError: Assignment to constant variable.

let num = 100; // type: number
let stringNum = "100" // type: string
 
console.log( num == stringNum  ) // Weak compare: true
console.log( num === stringNum ) // Strong compare: false

10 > 6   // true
5 < 89   // true
10 > 10  // false, why? Since 10 not not bigger than 10, is equal to 10
10 >= 10 // true

// Only the conditions between the () is true, the under code will run
 
if(true){
    console.log("I will run yeah 😀")
}
 
if(false){
    console.log("I will NOT run oh no 😥")
}

let nums = 100;
 
if(nums > 10){
    nums += 23 // this code will run since 100 > 10 is true
}
 
console.log(nums) // 123

let nums = 5;
 
if(nums > 10){
    nums += 23 // this code will NOT run since 5 > 10 is false
}
 
console.log(nums) // 5

// If the conditions in `if` is false, it will run the else code sections
if(false){
    console.log("I will NOT run oh no 😥")
}
else{
    console.log("I will run yeah 😀")
}

let nums = 20;
 
if(nums > 10){ 
    nums += 23 // if the nums > 10 is true, this line will run
}
else{
    nums -= 10 // if the nums > 10 is false, this line will run
}
 
console.log(nums) // 43
 

let nums = 5;
 
if(nums > 10){ 
    nums += 23 // if the nums > 10 is true, this line will run
}
else{
    nums -= 10 // if the nums > 10 is false, this line will run
}
 
console.log(nums) // -5

if(true){
    console.log("I will run yeah 😀")
}
 
console.log("I will run no matter if() is true or false")

if(false){
    console.log("I will run yeah 😀")
}
else{
    console.log("I will run But only if() is false")
}

let nums = 50;
 
if(nums == 10){ 
   console.log("I am a 10")
}
else if(nums == 20){
    console.log("I am a 20")
}
else{
    console.log("nope") // This line will be printed
}
 
// "nope"

let nums = 10;
 
if(nums == 10){ 
   console.log("I am a 10") // This line will be printed
}
else if(nums == 20){
    console.log("I am a 20")
}
else{
    console.log("nope") 
}
 
// "I am a 10"

let nums = 20;
 
if(nums == 10){ 
   console.log("I am a 10") 
}
else if(nums == 20){
    console.log("I am a 20") // This line will printed
}
else{
    console.log("nope") 
}
 
// "I am a 20"

function myFunctionName(){
    // Stuff to do when this function is called.
    console.log("Hello mate.")
}
 
myFunctionName() // calling the function

function greetings(names){
    // Stuff to do when this function is called.
    console.log("Hello " + names)
}
 
greetings("peter") // Hello peter
greetings("tom") // Hello tom

function greetings(names, ages){
    // Stuff to do when this function is called.
    console.log("Hello " + names)
    console.log("Are you the age of " + ages + " ?")
}
 
greetings("peter", 18) // Hello peter / Are you the age of 18 ?
greetings("tom", 33) // Hello tom / Are you the age of 33 ?

function returnSentences(names){
    let sentences = "Hello " + names;
    return sentences
}
 
let myNameSentences = returnSentences("peter"); //myNameSentences = "Hello peter" 
console.log(myNameSentences); // "Hello peter"
 
console.log(returnSentences("tom")); // "Hello tom"

let myFunction = (a, b) => a * b;

let someStuff = ...
const someStuffAlso = ...

function calculateAgeStatus(age){
    console.log(age)
    // Your code
}
 
// Testing
calculateAgeStatus(4)  // 未接受教育
calculateAgeStatus(59) // 工作
calculateAgeStatus(16) // 中學
calculateAgeStatus(8)  // 小學
calculateAgeStatus(21) // 大學