验证日期字符串的一种简单方法是将其转换为日期对象并进行测试，例如
// Expect input as d/m/yfunction isValidDate(s) { var bits = s.split('/'); var d = new Date(bits[2], bits[1] - 1, bits[0]); return d && (d.getMonth() + 1) == bits[1];}['0/10/2017','29/2/2016','01/02'].forEach(function(s) { console.log(s + ' : ' + isValidDate(s))})以这种方式测试日期时，仅需要测试月份，因为如果日期超出范围，则月份会更改。如果月份超出范围，则相同。任何年份均有效。
您还可以测试日期字符串的位：
function isValidDate2(s) { var bits = s.split('/'); var y = bits[2], m = bits[1], d = bits[0]; // Assume not leap year by default (note zero index for Jan) var daysInMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]; // If evenly divisible by 4 and not evenly divisible by 100, // or is evenly divisible by 400, then a leap year if ((!(y % 4) && y % 100) || !(y % 400)) { daysInMonth[1] = 29; } return !(/D/.test(String(d))) && d > 0 && d <= daysInMonth[--m]}['0/10/2017','29/2/2016','01/02'].forEach(function(s) { console.log(s + ' : ' + isValidDate2(s))})
