我想顯示下個月的 ap 標簽，例如現在是 12 月但 p 標簽應該顯示一月，如果我們在 Jan 中，p 標簽應該顯示二月。到目前為止我所擁有的是這個。
const month = ["January","February","March","April","May","June","July","August","September","October","November","December"];
const d = new Date();
let name = month[d.getMonth()];
document.getElementById("currentmonth").innerHTML = name;<!DOCTYPE html>
<html>
<body>
<p id="currentmonth"></p>
<p id="nextmonth"></p>
</body>
</html>uj5u.com熱心網友回復：
只需取一個變數并為其getMonth()值加 1 ，如果它大于 11，則將其更改為 0。
const month = ["January","February","March","April","May","June","July","August","September","October","November","December"];
const d = new Date();
let name = month[d.getMonth()];
var x = d.getMonth() 1;
if(x>11)
x=0
document.getElementById("currentmonth").innerHTML = name;
document.getElementById("nextmonth").innerHTML = month[x];<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<p id="currentmonth"></p>
<p id="nextmonth"></p>
</body>
</html>uj5u.com熱心網友回復：
您必須使用 setMonth 在 d 變數上設定下個月。
d.setMonth(Month 1)
const month = ["January","February","March","April","May","June","July","August","September","October","November","December"];
let Month = 11
const d = new Date();
d.setMonth(Month 1)
let name = month[d.getMonth()];
document.getElementById("currentmonth").innerHTML = name;<!DOCTYPE html>
<html>
<body>
<p id="currentmonth"></p>
<p id="nextmonth"></p>
</body>
</html>uj5u.com熱心網友回復：
const month = ["January","February","March","April","May","June","July","August","September","October","November","December"];
const d = new Date();
let name = month[d.getMonth()];
let nextMonth = month[(d.getMonth() 1)%12]
document.getElementById("currentmonth").innerHTML = name;
document.getElementById("nextmonth").innerHTML = nextMonth;<!DOCTYPE html>
<html>
<body>
<p id="currentmonth"></p>
<p id="nextmonth"></p>
</body>
</html>uj5u.com熱心網友回復：
如果月份的順序是根據實際月份索引，您可以按如下方式進行。
我猜你忘記了設定值 nextMonth
const month = ["January","February","March","April","May","June","July","August","September","October","November","December"];
const d = new Date();
let name = month[d.getMonth()];
let next = month[(new Date().getMonth() 1)%12];
document.getElementById("currentmonth").innerHTML = `Current: ${name}`;
document.getElementById("nextmonth").innerHTML = `Next: ${next}`;<!DOCTYPE html>
<html>
<body>
<p id="currentmonth"></p>
<p id="nextmonth"></p>
</body>
</html>轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/396703.html
標籤：javascript html