jQuery就是JavaScript。使用Javascript日期对象。

var d = new Date();
var strDate = d.getFullYear() + "/" + (d.getMonth()+1) + "/" + d.getDate();

如果你有jQuery UI(需要datepicker)，这将做的伎俩:

$.datepicker.formatDate('yy/mm/dd', new Date());

下面是获取当前日、年或月的方法

new Date().getDate()          // Get the day as a number (1-31)
new Date().getDay()           // Get the weekday as a number (0-6)
new Date().getFullYear()      // Get the four digit year (yyyy)
new Date().getHours()         // Get the hour (0-23)
new Date().getMilliseconds()  // Get the milliseconds (0-999)
new Date().getMinutes()       // Get the minutes (0-59)
new Date().getMonth()         // Get the month (0-11)
new Date().getSeconds()       // Get the seconds (0-59)
new Date().getTime()          // Get the time (milliseconds since January 1, 1970)

var d = new Date();

var today = d.getFullYear() + '/' + ('0'+(d.getMonth()+1)).slice(-2) + '/' + ('0'+d.getDate()).slice(-2);

这一行语句将给出YYYY-MM-DD:

new Date().toISOString().substr(0, 10)

'2022-06-09'

console.log($.datepicker.formatDate('yy/mm/dd', new Date()));