我正在尝试使用JavaScript制作基于文本的日历。我现在坚持的是当我将项目添加到日历后搜索该项目。随意在firefox或任何你的开发人员使用它来查看我的意思。当我搜索一个值时，会输出一个空白屏幕而不是当天安排的值（更具体地说，是推送到该特定列表的项目。）我应该怎样做才能更新日历列表项目最简单的方法吗？
var userInput; // user's choice of 'e', 's', or 'q'
var enterInfo; // item that is entered into calender from user
var searchInfo; // item that is used to search calendar for entered events
var Calendar = { // calender of scheduled events of user
monday: {
morning: [],
afternoon: [],
evening: []
},
tuesday: {
morning: [],
afternoon: [],
evening: []
},
wednesday: {
morning: [],
afternoon: [],
evening: []
},
thursday: {
morning: [],
afternoon: [],
evening: []
},
friday: {
morning: [],
afternoon: [],
evening: []
},
};
var addEventToCalendar = function(day, time) { // adds event from user to calender
switch (day) {
case "monday": // if day is monday
switch (time) {
case "morning":
Calendar.monday.morning.push(info[2]);
break;
case "afternoon":
Calendar.monday.afternoon.push(info[2]);
break;
case "evening":
Calendar.monday.evening.push(info[2]);
break;
}
break;
case "tuesday": // if day is monday
switch (time) {
case "morning":
Calendar.tuesday.morning.push(info[2]);
break;
case "afternoon":
Calendar.tuesday.afternoon.push(info[2]);
break;
case "evening":
Calendar.tuesday.evening.push(info[2]);
break;
}
break;
case "wednesday": // if day is monday
switch (time) {
case "morning":
Calendar.wednesday.morning.push(info[2]);
break;
case "afternoon":
Calendar.wednesday.afternoon.push(info[2]);
break;
case "evening":
Calendar.wednesday.evening.push(info[2]);
break;
}
break;
}
}
var outputEvents = function(day, time) { // adds event from user to calender
switch (day) {
case "monday": // if day is monday
switch (time) {
case "morning":
alert(Calendar.monday.morning);
break;
case "afternoon":
alert(Calendar.monday.afternoon);
break;
case "evening":
alert(Calendar.monday.evening);
break;
}
break;
case "tuesday": // if day is monday
switch (time) {
case "morning":
alert(Calendar.tuesday.morning);
break;
case "afternoon":
alert(Calendar.tuesday.afternoon);
break;
case "evening":
alert(Calendar.tuesday.evening);
break;
}
break;
case "wednesday": // if day is monday
switch (time) {
case "morning":
alert(Calendar.wednesday.morning);
break;
case "afternoon":
alert(Calendar.wednesday.afternoon);
break;
case "evening":
alert(Calendar.wednesday.evening);
break;
}
break;
}
}
var checkEnterInfo = function(info) { // checks if 'enterInfo' is valid
info = info.split(", "); // splits info up to check if valid
if (info.length != 3) { // checks if input from user has only 3 input values
alert("Enter your information correctly, please.\n\n" +
"Time, Day, Name (ex: morning, Monday, write letter)");
mainProgram();
} else if (isNaN(info[0] == false) || isNaN(info[1] == false) || isNaN(info[2]) == false) { // checks if all input values are strings
alert("Please enter only alphabetic characters as your information.");
mainProgram();
} else if (info[0] != "morning" && info[0] != "afternoon" && info[0] != "evening") { // checks if time of day is valid
alert("Please enter only one of the following for the time of day:\n\n" +
"'Morning', 'Afternoon', or 'Evening'");
mainProgram();
} else if (info[1] != "monday" && info[1] != "tuesday" && info[1] != "wednesday" && info[1] != "thursday" && info[1] != "friday") { // checks if day from user is valid
alert("Please enter only one of the following for the day of the event:\n\n" +
"'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday'");
mainProgram();
} else {
addEventToCalendar(info[0], info[1]);
mainProgram();
}
}
var checkSearchInfo = function(info) {
info = info.split(", "); // splits info to check if valid
if (info.length != 2) { // checks if info does not have 2 input values to search for event
alert("Please enter your information like so:\n\n" +
"ex. Afternoon, Wednesday");
mainProgram();
} else if (isNaN(info[0]) == false || isNaN(info[1]) == false) { // checks if input values are strings
alert("Please enter only alphabetic characters as your information.");
mainProgram();
} else if (info[0] != "morning" && info[0] != "afternoon" && info[0] != "evening") { // checks if time of day is valid
alert("Please enter only one of the following for the time of day:\n\n" +
"'Morning', 'Afternoon', or 'Evening'");
mainProgram();
} else if (info[1] != "monday" && info[1] != "tuesday" && info[1] != "wednesday" && info[1] != "thursday" && info[1] != "friday") { // checks if day from user is valid
alert("Please enter only one of the following for the day of the event:\n\n" +
"'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday'");
mainProgram();
} else {
outputEvents(info[1], info[0]);
}
}
var mainProgram = function() { // main program function
userInput = prompt("(E)nter an event, (S)earch, or (Q)uit: ").toLowerCase();
if (userInput == 'q') { // user wants to quit
alert("You have chosen to end the program.");
return userInput;
mainProgram();
} else if (userInput == 's') { // search for event in calendar
searchInfo = prompt("Enter time and day: ");
checkSearchInfo(searchInfo);
} else if (userInput == 'e') { // add event to calendar
enterInfo = prompt("Enter time, day, and name: ");
checkEnterInfo(enterInfo);
} else { // user did not enter an available option
alert("Choose from one of the options shown:" +
"\n\n(E)nter an event, (S)earch, or (Q)uit: ");
mainProgram();
}
}
mainProgram();
答案 0 :(得分：0)
您的函数addEventToCalendar无法访问info [2]，您不能将其作为参数传递，并且它不在上限范围内。
当你调用函数addEventToCalendar时，你应该添加一个thrid参数并传递信息[2]。或者只传递一个参数信息，并通过函数声明中的info [0]，info [1] et info [2]访问它。