jQuery Get Later Date / Future Date

This article describes how to use jQuery to get future dates, such as calculating the date after the current date. If you are not sure how to get the current date, please refer to the following method.

Use jQuery to check if the date is a future date

The following function checks whether a given date is in the future:

function isFutureDate() {
    let date = new Date();
    date.setFullYear(2020, 1, 1); // 设置一个示例未来日期
    let now = new Date();
    return date > now; // 返回布尔值，true表示是未来日期
}

Check whether the year is four digits

This function checks whether the date and month of the date are double digits and whether the year is four digits:

function twodigits(digits) {
    return (digits > 9) ? digits : '0' + digits;
}

Full code example

The following code gets the current date and calculates the date after 7 days:

let fullDate = new Date();
let twoDigitDays = twodigits(fullDate.getDate());
let twoDigitMonth = twodigits(fullDate.getMonth() + 1);

let departDate = twoDigitDays + "/" + twoDigitMonth + "/" + fullDate.getFullYear();
console.log("出发日期:", departDate);

fullDate.setDate(fullDate.getDate() + 7);
twoDigitDays = twodigits(fullDate.getDate());
twoDigitMonth = twodigits(fullDate.getMonth() + 1);

let returnDate = twoDigitDays + "/" + twoDigitMonth + "/" + fullDate.getFullYear();
console.log("返回日期:", returnDate);

Another code example

This example demonstrates more complex date calculations and formatting:

let currentDate = new Date();
let currentMonth = currentDate.getMonth() + 1;
let lastDayOfMonth = new Date(currentDate.getFullYear(), currentDate.getMonth(), 0).getDate();
let departureDate = futureDateDays(14); // 假设futureDateDays函数计算14天后的日期
let depDate = departureDate.split('/');
let departureDateMonth = parseInt(depDate[1]);

if (departureDateMonth !== currentMonth) {
    departureDate = leadingZero(currentMonth) + '/' + leadingZero(lastDayOfMonth) + '/' + depDate[2];
}
console.log("出发日期:", departureDate);

// 使用字符串格式 mm/dd/yyyy 将其转换回日期
let validDate = new Date(departureDate);
// 然后转换回字符串
departureDate = leadingZero(validDate.getDate()) + '/' + leadingZero(validDate.getMonth() + 1) + '/' + validDate.getFullYear();

// 输出示例：
// 09/30/2023
// Date { ... }
// 10/01/2023

(Suppose the futureDateDays and leadingZero functions are defined, used to calculate future dates and add leading zeros before numbers, respectively)

jQuery Date and Future Date FAQs (FAQs)

• How to use jQuery to check if a date is a future date? Use JavaScript Date objects to compare the timestamps of the current date and the target date.

• How to set the date for the next 10 days using jQuery? The Date method using the setDate object.

• How to format future dates as "dd-mm-yyyy" using jQuery? Use the Date, getDate and getMonth methods of the getFullYear object and do string splicing.

• How to use jQuery to verify that the date entered by the user is a future date? Get user input, create Date objects and compare.

• How to use jQuery to check if a date is a current date or a future date? Use the toDateString method to compare date strings, or compare timestamps.

Please note that in the above code examples, the futureDateDays and leadingZero functions need to be implemented by themselves according to actual needs. These functions simplify the date calculation and formatting process.

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