这是一个MIS中使用过正则式，检验用户输入的日期是否为正确的日期格式！分析完这个正则表达式后，对于正则表达式你绝对会有一个深深的认识！-This is a MIS used regular type, test date entered by the user for the correct date format! Analysis of End of the regular expressions, the regular expression for you absolutely have