用JavaScript填充即将到来的星期四

Question

我正在尝试用JavaScript填充即将到来的星期四。这项工作将持续到月底。如果是8月25日；下周四-8/32/2022"；。

我正在寻找一个更智能的解决方案来支持几个月等

document.getElementById("mydiv").innerHTML = getNextThursday();


function getNextThursday() {
var today = new Date();
var year = today.getFullYear();
var mes = today.getMonth()+1;
var dia = today.getDate() + ((7 - today.getDay() + 4) % 7 || 7);



var fecha = "Next Thursday - "+mes+"/"+dia+"/"+year;

return fecha;

}

<span id="mydiv"> Date</span>

Answer 1

首先将日期设置为下周四，然后获取年、月和日的值，例如

function getNextThursday(date = new Date()) {
// Copy date so don't affect original
let d = new Date(date);
// Set d to next Thursday first
d.setDate(d.getDate() + ((7 - d.getDay() + 4) % 7 || 7));
return d;
}
[new Date(2022,7,24), // Wed 24 Aug 2022
new Date(2022,7,25), // Thu 25 Aug 2022
new Date(2022,7,26), // Fri 26 Aug 2022
new Date()           // Today
].forEach(d => console.log(
d.toDateString() + ' -> ' +
getNextThursday(d).toDateString())
);

Answer 2

如果我保留您的逻辑，您必须只使用本机setDate((来设置日期。

function getNextThursday() {
const d = new Date();
d.setDate(d.getDate() + (((4 + 7 - d.getDay()) % 7) || 7));
const year = d.getFullYear();
const mes = d.getMonth()+1;
const dia = d.getDate();

const fecha = "Next Thursday - "+mes+"/"+dia+"/"+year;
return fecha;
}