使用JS和JQuery將'Month和Year'字符串轉換爲Date對象

我有兩個數組（我使用jQuery從表中創建它們），第一個是結束日期，第二個是開始日期。這些元素都是字符串：使用JS和JQuery將'Month和Year'字符串轉換爲Date對象

["June, 2012", "June, 2012", "August, 2011", "April, 2013", "August, 2010", "August, 2010", "April, 2013", "April, 2012", "April, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012", "June, 2012"]

["November, 2011", "April, 2012", "May, 2008", "May, 2007", "November, 2007", "May, 2007", "June, 2006", "June, 2007", "April, 2006", "January, 2008", "April, 2001", "April, 2001", "April, 2006", "April, 1998", "April, 1998", "September, 2008", "August, 2010", "August, 2009", "August, 2010", "August, 2009", "August, 2010", "August, 2010", "August, 2010", "January, 1997", "January, 1997", "January, 2010", "January, 2007", "April, 2010"]

我試圖讓每一組指數之間的時間。我會認爲我必須將這些字符串轉換爲Date對象date()然後執行計算來獲得所經過的時間，然後就在一個月和一年使用它是這樣的截斷：

function convertDate(passedDate) { 
    var m = new Array(7); 
    var y = passedDate.getFullYear(); 
    m[0] = "January"; 
    m[1] = "February"; 
    m[2] = "March"; 
    m[3] = "April"; 
    m[4] = "May"; 
    m[5] = "June"; 
    m[6] = "July"; 
    m[7] = "August"; 
    m[8] = "September"; 
    m[9] = "October"; 
    m[10] = "November"; 
    m[11] = "December"; 
    return m[passedDate.getMonth()] + "months and " + y + " years; 
};

這裏是fiddle這裏是我的問題：

反正有沒有做到這一點，而不將其更改爲約會對象，因爲我不感興趣的日子或時間？
是否有另一種方法，你會建議，而不是嘗試將日期轉換爲經過日期數學公式，然後轉換回字符串？
我將如何識別當前元素的姐妹元素，以便我可以避免使用雙重嵌套循環？（也將在不同的問題，問這個，因爲它解決了一個不同的主題）

謝謝你幫我，我試圖與可選屬性的互動簡歷，我包括一些數據，以便我不需要回答所有冷酷呼叫的招聘人員的基本信息。

來源

2012-06-10 chris Frisina

真的，所有你需要的是從月份名稱到數字的地圖。你可以建立一個這樣的：

var monthNames = [ "January", "February", "March", "April", 
        "May",  "June",  "July",  "August", 
        "September", "October", "November", "December" ] 
var monthNumber = {} 
for (var i=0; i<monthNames.length; ++i) { 
    monthNumber[monthNames[i]] = i; 
}

現在你有，例如，monthNumber['October'] == 9。然後你可以把你的一個字符串成月數和年。如果您然後將其轉換爲絕對月份數（年* 12 +月），您可以減去以獲取經過的月份。

function stringToMonthNumber(monthYear) { 
    var parts = monthYear.split(/\s*,\s*/) 
    var month = monthNumber[parts[0]] 
    var year = parts[1] - 1 
    return year * 12 + month 
} 

function elapsedMonths(startString, endString) { 
    return stringToMonthNumber(endString) - stringToMonthNumber(startString) 
}

那麼這個：

elapsedMonths("November, 2011", "June, 2012")

回報7.

來源

2012-06-10 21:00:17

使用JS和JQuery將'Month和Year'字符串轉換爲Date對象

回答

相關問題