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不確定錯誤是否存在於viewData（）函數中。添加第二個輸入時，它在警告框中顯示爲未定義
var list = {
firstName: [],
lastName: [],
maximumHeartRate: [],
restingHeartRate: [],
age: [],
gender: []
}
alert("Welcome to the VO2 Max Categorisation App.");
function validate(string) {
var stringToVal = prompt(string);
var range = new RegExp("^[a-zA-Z]{2,}$");
while (range.test(stringToVal) == false || stringToVal == "" || stringToVal == null) {
stringToVal = prompt(string);
}
return stringToVal
}
function validateNumber(numToVal, min, max){
var askUser = Number(prompt(numToVal))
while (isNaN(askUser) || askUser < min || askUser > max || askUser == '' || askUser == null) {
askUser = Number(prompt("Please enter a number between " + min + " & " + max + "."));
}
return askUser
}
function addData(list) {
var userFirstName = validate("First name of user?");
var userLastName = validate("Last name of user?");
var userGender = validate("Gender of user?");
var userAge = validateNumber("Please enter an age between 20 - 39!",20,39);
var MHR = validateNumber("Enter maximum heart rate of user",30,200);
var RHR = validateNumber("Enter resting heart rate of user",30,200);
list.firstName.push(userFirstName);
list.lastName.push(userLastName);
list.gender.push(userGender);
list.age.push(userAge);
list.maximumHeartRate.push(MHR);
list.restingHeartRate.push(RHR);
}
，該功能要求的用戶，並推到一切名單
function calculateVO2Max(list) {
var VO2Max = 15.3 * (list.maximumHeartRate/list.restingHeartRate);
return VO2Max;
}
此計算最大攝氧量
function VO2MaxCategorisation(Gender,Age,VO2Max) {
if (Gender == "Female" && Age >= 20 && Age <= 29 && VO2Max < 31) {
return("Low");
} else if (Gender == "Female" && Age >= 20 && Age <= 29 && (VO2Max >= 31 && VO2Max <=34)) {
return("Fair");
} else if (Gender == "Female" && Age >= 20 && Age <= 29 && (VO2Max >= 35 && VO2Max <= 37)) {
return("Average");
} else if (Gender == "Female" && Age >= 20 && Age <= 29 && (VO2Max >= 38 && VO2Max <= 41)) {
return("Good");
} else if (Gender == "Female" && Age >= 20 && Age <= 29 && VO2Max > 41) {
return("High");
}
if (Gender == "Female" && Age >= 30 && Age <= 39 && VO2Max < 29) {
return("Low");
} else if (Gender == "Female" && Age >= 30 && Age <= 39 && (VO2Max >= 29 && VO2Max <= 32)) {
return("Fair");
} else if (Gender == "Female" && Age >= 30 && Age <= 39 && (VO2Max >= 33 && VO2Max <= 35)) {
return("Average");
} else if (Gender == "Female" && Age >= 30 && Age <= 39 && (VO2Max >= 36 && VO2Max <= 39)) {
return("Good");
} else if (Gender == "Female" && Age >= 30 && Age <= 39 && VO2Max > 39) {
return("High");
}
if (Gender == "Male" && Age >= 20 && Age <= 29 && VO2Max < 37) {
return("Low");
} else if (Gender == "Male" && Age >= 20 && Age <= 29 && (VO2Max >= 37 && VO2Max <= 41)) {
return("Fair");
} else if (Gender == "Male" && Age >= 20 && Age <= 29 && (VO2Max >= 42 && VO2Max <= 44)) {
return("Average");
} else if (Gender == "Male" && Age >= 20 && Age <= 29 && (VO2Max >= 45 && VO2Max <= 48)) {
return("Good");
} else if (Gender == "Male" && Age >= 20 && Age <= 29 && VO2Max > 48) {
return("High");
}
if (Gender == "Male" && Age >= 30 && Age <= 39 && VO2Max < 35) {
return("Low");
} else if (Gender == "Male" && Age >= 30 && Age <= 39 && (VO2Max >= 35 && VO2Max <= 39)) {
return("Fair");
} else if (Gender == "Male" && Age >= 30 && Age <= 39 && (VO2Max >= 40 && VO2Max <= 42)) {
return("Average");
} else if (Gender == "Male" && Age >= 30 && Age <= 39 && (VO2Max >= 43 && VO2Max <= 47)) {
return("Good");
} else if (Gender == "Male" && Age >= 30 && Age <= 39 && VO2Max > 47) {
return("High");
}
}
此功能分類
function viewData(list) {
var string = ""
for(var i = 0; i < list.firstName.length; i++) {
string += (list.firstName[i] + " " + list.lastName[i] + ": " + VO2MaxCategorisation(list.gender[i],list.age[i],calculateVO2Max(list)) + "\n")
}
alert(string)
}
它顯示了不確定的時候2 inpu TS顯示在警告框，但它表明，當僅顯示1放
function optionMenu(list) {
while(true) {
var optionChoice = Number(prompt("What do you want to do: \n 1)Enter data \n 2)View data \n 3)Exit"));
if (optionChoice == 1) {
addData(list);
} else if (optionChoice == 2) {
viewData(list);
} else if (optionChoice == 3) {
break;
} else {
alert("Sorry,choose from the options.");
}
}
}
這是選擇
optionMenu(list);