我总是在查明日期函数时遇到问题
var d = new Date(),
month = d.getMonth(),
mondays = [];
d.setDate(1);
// Get the first Monday in the month
while (d.getDay() !== 1) {
d.setDate(d.getDate() + 1);
}
// Get all the other Mondays in the month
while (d.getMonth() === month) {
var pushDate = new Date(d.getTime());
mondays.push(pushDate.getDate() + '-' + (pushDate.getMonth()+1) + '-' + pushDate.getFullYear());
d.setDate(d.getDate() + 7);
}
我正在使用此功能获取当月的所有星期一。
我如何调整此代码以获取一年中所有剩余的星期一?
答案 0 :(得分:3)
只是循环一年而不是一个月。代码和你的代码一样,工作正常。只是改了一个月 - > year和getMonth() - >得到年()
var d = new Date(),
year = d.getYear(),
mondays = [];
d.setDate(1);
// Get the first Monday in the month
while (d.getDay() !== 1) {
d.setDate(d.getDate() + 1);
}
// Get all the other Mondays in the month
while (d.getYear() === year) {
var pushDate = new Date(d.getTime());
mondays.push(pushDate.getDate() + '-' + (pushDate.getMonth()+1) + '-' + pushDate.getFullYear());
d.setDate(d.getDate() + 7);
}
答案 1 :(得分:1)
这只是一种替代方案,它使用更简单的方法来获取每月的第一天。
// Get all Mondays in year from provided date
// Default today's date
function getMondays(d) {
// Copy d if provided
d = d ? new Date(+d) : new Date();
// Set to start of month
d.setDate(1);
// Store end year and month
var endYear = d.getFullYear() + 1;
var endMonth = d.getMonth();
// Set to first Monday
d.setDate(d.getDate() + (8 - (d.getDay() || 7)) % 7);
var mondays = [new Date(+d)];
// Create Dates for all Mondays up to end year and month
while (d.getFullYear() < endYear || d.getMonth() != endMonth) {
mondays.push(new Date(d.setDate(d.getDate() + 7)));
}
return mondays;
}
// Get all Mondays and display result
// SO console doensn't show all results
var mondays = getMondays();
mondays.forEach(function(mon) {
console.log(mon.toLocaleString(void 0, {
weekday: 'short',
day: 'numeric',
month: 'short',
year: 'numeric'
}));
});
// Count of Mondays, not all shown in SO console
console.log('There are ' + mondays.length + ' Mondays, the first is ' + mondays[0].toString())
&#13;
答案 2 :(得分:0)
var x = new Date();
//set the financial year starting date
x.setFullYear(2016, 03, 01);
//set the next financial year starting date
var y = new Date();
y.setFullYear(2017, 03, 01);
var j = 1;
var count = 0;
//getting the all mondays in a financial year
for (var i = 0; x < y; i += j) {
if (x.getDay() === 1) {
document.write("Date : " + x.getDate() + "/" +
(x.getMonth() + 1) + "<br>");
x = new Date(x.getTime() + (7 * 24 * 60 * 60 * 1000));
j = 7;
count++;
} else {
j = 1;
x = new Date(x.getTime() + (24 * 60 * 60 * 1000));
}
}
document.write("total mondays : " + count + "<br>");