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/*jslint plusplus: true, browser: true, devel: true */ | ||
/** | ||
* Возвращает объект Event | ||
* | ||
* @param {Object} NewEvent Объект - событие | ||
* @param {Number|Date} NewEvent.start Начало события | ||
* @param {Number|Date} NewEvent.end Конец события | ||
* @param {String} [NewEvent.name="Событие"] Имя события | ||
* @param {String} NewEvent.place Место события | ||
* @param {Number} NewEvent.rating Рейтинг события от 0 до 5 | ||
* @param {String} NewEvent.comment комментарий, описание события | ||
* @param {String} NewEvent.link ссылка | ||
* | ||
* @example | ||
* Event({ | ||
* start: new Date('2011-10-10 14:48:00'), | ||
* end: new Date('2011-10-10 15:48:00'), | ||
* name: "Совещание", | ||
* place: "офис 111", | ||
* rating: 5, | ||
* comment: "взять отчет!!!", | ||
* } | ||
* ) | ||
* | ||
* @return {Object} | ||
*/ | ||
function datatype(data) { | ||
"use strict"; | ||
if (typeof data === 'undefined') { | ||
return false; | ||
} | ||
if (!data.getTime) { | ||
return false; | ||
} | ||
if ('Invalid Date' === data) { | ||
return false; | ||
} | ||
return true; | ||
} | ||
/** | ||
* возвращает true, если data имеет тип дата и она корректна | ||
*/ | ||
function ratingtype(rating) { | ||
"use strict"; | ||
if (typeof rating !== 'number') { | ||
return false; | ||
} | ||
if (rating > 5 || rating < 0) { | ||
return false; | ||
} | ||
return true; | ||
} | ||
/** | ||
* возвращает true, если rating - число от 0 до 5 | ||
*/ | ||
function Event(NewEvent) { | ||
"use strict"; | ||
if (!datatype(NewEvent.start)) { | ||
alert(NewEvent.start + " не является датой!"); | ||
return; | ||
/** | ||
throw { | ||
name: Error; | ||
message: NewEvent.start + " не является датой!" | ||
} | ||
**/ | ||
} | ||
if (!datatype(NewEvent.end)) { | ||
alert(NewEvent.end + " не является датой!"); | ||
return; | ||
} | ||
if (!ratingtype(NewEvent.rating)) { | ||
alert("введите рейтинг от 0 до 5"); | ||
return; | ||
} | ||
return { | ||
"start": NewEvent.start, | ||
"end": NewEvent.end, | ||
"name": NewEvent.name || "Событие", | ||
"place": NewEvent.place, | ||
"rating": NewEvent.rating, | ||
"comment": NewEvent.comment, | ||
"link": NewEvent.link | ||
}; | ||
} | ||
/** | ||
*Случайное целое число между min и max | ||
**/ | ||
function getRandomInt(min, max) { | ||
"use strict"; | ||
return Math.floor(Math.random() * (max - min + 1)) + min; | ||
} | ||
|
||
var today = new Date(); | ||
function addDay(n) {// прибавляет к текущей дате n дней | ||
"use strict"; | ||
return new Date(today.getTime() + (86400000 * n)); | ||
} | ||
function nDay(n) {// возвращает n-ый день от текущей даты в 00часов 00минут | ||
"use strict"; | ||
var Day, a, b; | ||
Day = addDay(n); | ||
a = Day.getTime(); | ||
b = Day.getMilliseconds() + (Day.getHours() * 3600000) + (Day.getMinutes() * 60000) + (Day.getSeconds() * 1000); | ||
return new Date(a - b); | ||
} | ||
function hours(milis) {// переводит миллисекунда в часы. Возвращает строку | ||
"use strict"; | ||
var hour, minute, s; | ||
hour = Math.floor(milis / 3600000); | ||
minute = Math.floor((milis - (hour * 3600000)) / 60000); | ||
s = hour + "ч " + minute + "мин"; | ||
return s; | ||
} | ||
var week = addDay(7); | ||
var maxdate = addDay(31); | ||
var mindate = addDay(-31); | ||
|
||
/** | ||
*создаем коллекцию из 25 случайных событий: | ||
**/ | ||
var collection = []; | ||
var i; | ||
for (i = 0; i < 25; i++) { | ||
var startrandom = new Date(getRandomInt(mindate.getTime(), maxdate.getTime()));// начало события - случайная дата в интервале +-месяц от текущей | ||
var endrandom = new Date(startrandom.getTime() + (getRandomInt(0, 86400000)));//конец события - случайная дата в течении суток начиная от начала события | ||
collection.push(new Event({ | ||
start: startrandom, | ||
end: endrandom, | ||
name: "Событие " + (i + 1), | ||
place: "", | ||
rating: getRandomInt(0, 5),//рейтинг - случайное целое число от 0 до 5 | ||
comment: "", | ||
link: "" | ||
})); | ||
} | ||
|
||
/**показываем все события**/ | ||
collection.forEach(function (NewEvent) { | ||
"use strict"; | ||
console.log(NewEvent.name + ": начало: " + NewEvent.start + " конец: " + NewEvent.end + " рейтинг: " + NewEvent.rating); | ||
}); | ||
|
||
/** | ||
*функция, которая сортирует выбранные элементы коллекции (все, прошедшие, будущие, в течение следующих n дней, через n дней...) по заданному параметру(начало, длительность, рейтинг) | ||
*@param {Number|Date} dateStart начиная с этого дня | ||
*@param {Number|Date} dateEnd заканчивая этим днем | ||
*@param {Sring} param параметр, по которому происходит сотрировка | ||
**/ | ||
function sortEvent(dateStart, dateEnd, param) { | ||
"use strict"; | ||
var choose = collection.filter(function (NewEvent) {return (NewEvent.start > dateStart && NewEvent.start < dateEnd); });// выбрали все события в заданном промежутке | ||
if (param === "start") { // сортировка по началу события | ||
return choose.sort(function (Event1, Event2) {return Event1.start - Event2.start; }); | ||
} | ||
if (param === "length") {//сортировка по длине события | ||
return choose.sort(function (Event1, Event2) {return (Event1.end - Event1.start) - (Event2.end - Event2.start); }); | ||
} | ||
if (param === "rating") {//сортировка по рейтингу события | ||
return choose.sort(function (Event1, Event2) {return Event1.rating - Event2.rating; }); | ||
} | ||
} | ||
|
||
/** | ||
*далее - примеры различных запросов | ||
**/ | ||
var sortCollection; | ||
console.log("показать все события следующей недели, отсортированные по убыванию рейтинга:"); | ||
sortCollection = sortEvent(today, week, "rating").reverse(); | ||
if (sortCollection.length > 0) { | ||
sortCollection.forEach(function (NewEvent) {"use strict"; console.log(NewEvent.name + ": " + NewEvent.start + " рейтинг: " + NewEvent.rating); }); | ||
} else { | ||
console.log("таких событий нет"); | ||
} | ||
|
||
console.log("показать все последующие события, отсортированные по убыванию рейтинга:"); | ||
sortCollection = sortEvent(today, maxdate, "rating").reverse(); | ||
if (sortCollection.length > 0) { | ||
sortCollection.forEach(function (NewEvent) {"use strict"; console.log(NewEvent.name + ": " + NewEvent.start + " рейтинг: " + NewEvent.rating); }); | ||
} else { | ||
console.log("таких событий нет"); | ||
} | ||
|
||
console.log("показать ближайшее событие:"); | ||
sortCollection = sortEvent(today, maxdate, "start"); | ||
if (sortCollection.length > 0) { | ||
console.log(sortCollection[0].name + ": " + sortCollection[0].start); | ||
} else { | ||
console.log("таких событий нет"); | ||
} | ||
|
||
console.log("показать все прошедшие события, отсортированные по дате:"); | ||
sortCollection = sortEvent(mindate, today, "start"); | ||
if (sortCollection.length > 0) { | ||
sortCollection.forEach(function (NewEvent) {"use strict"; console.log(NewEvent.name + ": " + NewEvent.start + " рейтинг: " + NewEvent.rating); }); | ||
} else { | ||
console.log("таких событий нет"); | ||
} | ||
|
||
console.log("показать все события через 5 дней, отсортированные по рейтингу:"); | ||
sortCollection = sortEvent(nDay(5), nDay(6), "rating").reverse(); | ||
if (sortCollection.length > 0) { | ||
sortCollection.forEach(function (NewEvent) {"use strict"; console.log(NewEvent.name + ": " + NewEvent.start + " рейтинг: " + NewEvent.rating); }); | ||
} else { | ||
console.log("таких событий нет"); | ||
} | ||
console.log("отсортировать все события по продолжительности:"); | ||
sortCollection = sortEvent(mindate, maxdate, "length"); | ||
if (sortCollection.length > 0) { | ||
sortCollection.forEach(function (NewEvent) {"use strict"; console.log(NewEvent.name + ": продолжительность " + hours(NewEvent.end - NewEvent.start)); }); | ||
} else { | ||
console.log("таких событий нет"); | ||
} |
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Старайся где это можно использовать строчные комментарии
// показываем все события