/** 题目:Confusing Date Format UVALive 7711 链接:https://vjudge.net/contest/174844#problem/A 题意:给定mm-mm-mm格式的时间.年份(1900-1999)只给了后两位数,问有多少种合法的排列使时间正确. 思路: 第一次:快速读题,题意不清,没注意到这句话, To punish teams who did not read this problem statement carefully, we’ll add
Validate the date format function checkdate(input) { var validformat = /^\d{2}\/\d{2}\/\d{4}$/; //Basic check for format validity var returnval = false; if (!validformat.test(input.value)) alert("Invalid Date Format. Please correct and submit again.&