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@thiagodebastos
Last active Sep 3, 2021
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var daysOfWeek = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'];
var inputCalories = [3500, 1500, 1800, 2300, 2400, 1500, 1500];
// const caloriesByDay = daysOfWeek.map(function(day, index) {
// return {
// [day]:inputCalories[index]
// }
// })
const caloriesByDay = daysOfWeek.map((day, i) => ({[day]: inputCalories[i]}))
console.log(caloriesByDay)
function calculateHealthPlan(caloriesByDay) {
var desiredCaloriePerDay = 2200;
var healthyDays = []
var unhealthyDays = []
for(var index = 0; index < inputCalories.length; index++) {
// shorter version
// const isHealthy = inputCalories[index] <= 2000 : true : false
// if(isHealthy)
if(inputCalories[index] <= 2200) {
// add to healthyDays
healthyDays.push(
{
[daysOfWeek[index]]: inputCalories[index]
}
)
// healthyDays = [...healthyDays, inputCalories[index]]
}
if(inputCalories[index] > 2200) {
// add to unhealthyDays
unhealthyDays.push(
{
[daysOfWeek[index]]: inputCalories[index]
}
)
}
}
return {
healthyDays: healthyDays,
unhealthyDays: unhealthyDays
}
}
var outComeName = ['fail','pass', 'credit', 'distinction', 'high distinction'];
var testScores = [60, 55, 80, 44, 56, 65, 34,65, 75, 56, 75, 78, 97, 87, 46, 75, 57, 85, 43, 67];
var scoresWithName = [
{
"name": "Arney",
"score": 95
}, {
"name": "Ignace",
"score": 8
}, {
"name": "Yorker",
"score": 90
}, {
"name": "Waverly",
"score": 21
}, {
"name": "Meggy",
"score": 15
}, {
"name": "Angel",
"score": 17
}, {
"name": "Gennifer",
"score": 87
}, {
"name": "Maxi",
"score": 25
}, {
"name": "Shawnee",
"score": 66
}, {
"name": "Berne",
"score": 10
}, {
"name": "Devonne",
"score": 9
}, {
"name": "Devondra",
"score": 37
}, {
"name": "Ilene",
"score": 4
}, {
"name": "Abdel",
"score": 35
}, {
"name": "Malachi",
"score": 11
}, {
"name": "Jackie",
"score": 35
}, {
"name": "Rozelle",
"score": 98
}, {
"name": "Addy",
"score": 58
}, {
"name": "Edwin",
"score": 95
}, {
"name": "Lethia",
"score": 57
}]
function getTestResultsOLD(testResultByGrade){
var result = {
fail: [],
pass: [],
credit: [],
distinction: [],
highDistinction: [],
}
for(var index = 0; index < testResultByGrade.length ; index++){
if (testScores[index]<= 49) {
result.fail = [...result.fail, testResultByGrade[index]].sort()
}
if((testResultByGrade[index]>=50) && (testResultByGrade[index]<=64)) {
result.pass = [...result.pass, testResultByGrade[index]].sort()
}
if((testResultByGrade[index]>=65) && (testResultByGrade[index]<=74)) {
result.credit = [...result.credit, testResultByGrade[index]].sort()
}
if((testResultByGrade[index]>=75) && (testResultByGrade[index]<=84)) {
result.distinction = [...result.distinction, testResultByGrade[index]].sort() }
if(testResultByGrade[index] >=85) {
result.highDistinction = [...result.highDistinction, testResultByGrade[index]].sort()
}
}
return result
}
function getGrade(score) {
var result = ''
switch(true) {
case score >= 85:
result = 'high distinction'
break
case score >= 75:
result = 'distinction'
break
case score >= 65:
result = 'credit'
break
case score >= 50:
result = 'pass'
break
default:
result = 'fail'
}
return result
}
// adds property 'grade' to student object
function addGradeToStudentObject(results) {
return results.map(result => {
return {
...result,
grade: getGrade(result.score)
}
})
}
// get grade names (eg 'pass') from results
// and create a new array with only those grade names
function createGradesArray(results){
// create object with grades as keys
// add students to each key based on their result
var organisedByGrades = Array.from(new Set(results.map(r => r.grade)))
return organisedByGrades
}
// create a new object who's key names
// are created from an array of strings
function createObjectWithKeys(arr) {
var newObj = {}
// for each string in an array, add a key
// named by that string in the newObj object
arr.map(el => newObj[el] = [])
return newObj
}
// given a results object, add student names to
// corresponding object key
// eg: if grade is 'pass', add student name to 'pass'
// property in object
function categoriseResults(results, grades) {
// grades object:
// {distinction: [], pass: [], etc etc}
var gradesObj = Object.assign({}, grades)
results.map(result => gradesObj[result.grade] = [...gradesObj[result.grade], result.name])
return gradesObj
}
var testResultsWithNameArr = addGradeToStudentObject(scoresWithName)
var gradesArray = createGradesArray(testResultsWithNameArr)
var gradesObject = createObjectWithKeys(gradesArray)
var testResults = addGradeToStudentObject(scoresWithName)
var categorisedResults = categoriseResults(testResults, gradesObject)
// console.log(testResultsWithNameArr)
// console.log(gradesArray)
// console.log(gradesObject)
// console.log(testResults)
// console.log(categorisedResults)
// var testScores2 = [1,2,34,65,87,99999, 85];
// console.log([...testScores, ...testScores2])
// console.log(testResults([...testScores, ...testScores2]))
//
// mockaroo.com.au
//
// reference vs value
// https://www.freecodecamp.org/news/how-to-get-a-grip-on-reference-vs-value-in-javascript-cba3f86da223/
var person1 = {
age: 10,
name: 'john'
}
var person2 = person1
person2.age = 200
console.log(person1)
var name1 = "john"
var name2 = name1
name2 = 'peter'
console.log(name1)
console.log(name2)
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