update

solutions/day-01/level1.js

@@ -99,4 +99,54 @@ dogs.breed = "germen sheford"
 dogs.getDogInfo = function(){
     return `name: ${this.name} , color : ${this.color} , age : ${this.age} , breed : ${this.breed}`
 }
-console.log(dogs.getDogInfo());
+console.log(dogs.getDogInfo());
+
+
+function fullName(firstName , lastName){
+    return `${firstName} ${lastName}`
+}
+
+console.log(fullName("Ashim","Debnath"))
+
+function addNumbers(num1 ,num2){
+     return (num1 + num2)
+}
+
+console.log(addNumbers(5,5))
+
+const pi = 3.14
+
+function areaOfCircle(pi , r){
+    return (pi*r*r)
+}
+
+console.log(areaOfCircle(pi,4))
+
+function celciusToFarenheit(c){
+    let f = c*(9/5)+32
+    return f
+}
+
+console.log(celciusToFarenheit(100))
+
+function BMIcalculator(weight , height , age){
+     if(age>=20){
+        const BMI = weight/(height*height)
+      if(BMI < 18.5){
+        return "You are underweight";
+      }
+      else if(BMI >= 18.5 && BMI <= 24.5){
+        return "Normal weight";
+      }
+      else if(BMI >= 25 && BMI <= 29.5){
+       return "overweight"
+      }
+      else{
+         return "obese"
+      }
+     }else{
+        return "age is less than 20, can not calculate BMI"
+     }
+}
+
+console.log(BMIcalculator(80 , 1.70 , 21))

solutions/day-01/level3.mjs

@@ -17,4 +17,217 @@ console.log("Range of age = " + (ages[ages.length-1]-ages[0]))
 console.log(countries.slice(0,10))
 let start1 = Math.floor((countries.length-1)/2)
 let end1 = Math.ceil((countries.length-1)/2)
-console.log("median age is= "+ countries.slice(start1,end1+1))
+console.log("median age is= "+ countries.slice(start1,end1+1))
+
+let personAccount = {
+    firstName : "Ashim",
+    lastName : "Debnath",
+    income :[
+        {
+            "income" : 10000,
+            "description" : "business"
+        },
+        {
+            "income" : 20000,
+            "description" : "job"
+        }
+    ],
+    expenses : [
+        {
+            expense:5000,
+            description : "food"
+        },
+        {
+            expense : 5000,
+            description : "cloths"
+        },
+        {
+            expense : 5000,
+            description : "date"
+        },
+        {
+            expense : 10000,
+            description :"others"
+        }
+    ],
+    totalIncome : function (){
+        let incomes = this.income;
+        let sum =0;
+        for (let income of incomes){
+          sum += income.income
+        }
+        return sum;
+    },
+    totalExpenses : function(){
+        let expenses = this.expenses;
+        let sum = 0;
+        for(let expense of expenses){
+            sum += expense.expense
+        }
+        return sum
+    },
+    accountBalance : function (){
+        return (this.totalIncome() - this.totalExpenses())
+    }
+}
+
+console.log(personAccount.totalIncome())
+console.log(personAccount.totalExpenses())
+console.log(personAccount.accountBalance())
+
+
+const users = [
+    {
+      _id: 'ab12ex',
+      username: 'Alex',
+      email: 'alex@alex.com',
+      password: '123123',
+      createdAt: '08/01/2020 9:00 AM',
+      isLoggedIn: false,
+    },
+    {
+      _id: 'fg12cy',
+      username: 'Asab',
+      email: 'asab@asab.com',
+      password: '123456',
+      createdAt: '08/01/2020 9:30 AM',
+      isLoggedIn: true,
+    },
+    {
+      _id: 'zwf8md',
+      username: 'Brook',
+      email: 'brook@brook.com',
+      password: '123111',
+      createdAt: '08/01/2020 9:45 AM',
+      isLoggedIn: true,
+    },
+    {
+      _id: 'eefamr',
+      username: 'Martha',
+      email: 'martha@martha.com',
+      password: '123222',
+      createdAt: '08/01/2020 9:50 AM',
+      isLoggedIn: false,
+    },
+    {
+      _id: 'ghderc',
+      username: 'Thomas',
+      email: 'thomas@thomas.com',
+      password: '123333',
+      createdAt: '08/01/2020 10:00 AM',
+      isLoggedIn: false,
+    },
+  ]
+  
+  
+
+  function signUp(users ,name , email , password){
+    let userExist = true;
+      for(const user of users){
+         if(user.email == email){
+            userExist = true;
+        }else{
+            userExist = false;
+            }
+         }
+         if(!userExist){
+         users.push({
+            _id : Math.floor(Math.random(3000)*10000),
+            name : name,
+            email : email,
+            password : password,
+            createdAt : Date.now()
+         })
+        }else{
+            console.log("user already exist!")
+        }
+      }
+
+
+  signUp(users , "Ashim" , "ashd69@gmail.com","12345")
+
+  console.log(users)
+
+  signUp(users , "Ashim" , "ashd69@gmail.com","12345")
+
+
+  const products = [
+    {
+      _id: 'eedfcf',
+      name: 'mobile phone',
+      description: 'Huawei Honor',
+      price: 200,
+      ratings: [
+        { userId: 'fg12cy', rate: 5 },
+        { userId: 'zwf8md', rate: 4.5 },
+      ],
+      likes: [],
+    },
+    {
+      _id: 'aegfal',
+      name: 'Laptop',
+      description: 'MacPro: System Darwin',
+      price: 2500,
+      ratings: [],
+      likes: ['fg12cy'],
+    },
+    {
+      _id: 'hedfcg',
+      name: 'TV',
+      description: 'Smart TV:Procaster',
+      price: 400,
+      ratings: [{ userId: 'fg12cy', rate: 5 }],
+      likes: ['fg12cy'],
+    },
+  ]
+
+  function rateProduct(prodname , userId , rating , products){
+
+    for(const product of products){
+
+        if(product.name == prodname){
+            product.ratings.push({
+                userId : userId,
+                rate : rating
+            })
+        }
+    }
+         
+  }
+
+  rateProduct('TV','ppkk11',5,products)
+  for(const product of products){
+
+    console.log(product)
+}
+
+function averageRating(prodName , products){
+  for(const product of products){
+    if(product.name == prodName){
+        let ratings = product.ratings
+        console.log(ratings)
+        let sum = 0;
+        let l = ratings.length;
+        for(const rating of ratings){
+            sum += rating.rate
+        }
+        return (sum / l);
+    }
+  }
+}
+
+console.log(`average rating ${averageRating('mobile phone',products)}`)
+
+function likeProduct(name , userId , products){
+    for(const product of products){
+       if(product.name == name && product.likes.length == 0){
+           product.likes.push(userId)
+       }else if(product.name == name && product.likes.length != 0){
+         product.likes.pop()
+       }
+    }
+}
+
+likeProduct('mobile phone','ppkk11',products)
+for(let product of products)
+     console.log(product)