JS 字符串转化为时间类型

var temper="2009-6-28 15:23"
var dt = new Date(temper.replace(/-/,"/"))
alert(dt) 

或者 ：

 

function ConvertDateFromString(dateString) {
    if (dateString) {
        var arr1 = dateString.split(" ");
        var sdate = arr1[0].split('-');
        var date = new Date(sdate[0], sdate[1], sdate[2]);
        return date;
    }
}

获得一个月中的总天数：

function GetDayInMonth(day) {
    var today = day;
    var year = today.getFullYear();
    if (year < 2000) year += 1900; // Y2K fix
    var month = today.getMonth();
    var monarr = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
    if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0))
        monarr[1] = 29;
    return monarr[month];
}