javascript 为 YYYY-MM-DD HH:MM 编写 JS 正则表达式
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Writing JS regex for YYYY-MM-DD HH:MM
提问by user3355028
I'm new with JS and I need to validate a date in a form. The date field is a regular text field. The name of the date field called "date". How can I validate if the date is from the format of YYYY-MM-DD HH:MM with a simple regular expression in JS?
我是 JS 新手，我需要验证表单中的日期。日期字段是一个普通的文本字段。日期字段的名称称为“日期”。如何使用 JS 中的简单正则表达式验证日期是否来自 YYYY-MM-DD HH:MM 格式？
Thanks
谢谢
回答by Always Sunny
Try this way to validate your date in YYYY-MM-DD HH:MMformat
尝试以这种方式验证您的日期YYYY-MM-DD HH:MM格式
var re = /[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1]) (2[0-3]|[01][0-9]):[0-5][0-9]/;
var str = '2014-02-04 12:34';
var m;
while ((m = re.exec(str)) != null) {
if (m.index === re.lastIndex) {
re.lastIndex++;
}
// View your result using the m-variable.
// eg m[0] etc.
}
SEE DEMO :https://www.regex101.com/r/rT6vJ4/1
回答by Ben Tayaa
you can try this also :
你也可以试试这个：
var myRegExp=/^\d{4}-[0-1][0-2]-[0-3]\d\s([0-1][0-9]|2[0-3]):[0-5]\d$/;
var date="2015-01-01 10:10";
if(date.match(myRegExp)){
console.log("Good format");
}
Infos about the regular expression :
关于正则表达式的信息：
- " ^ " : assert position at start of the string
- " \d{x} " : match a digit Exactly x times
- " - " : matches the character - literally
- " [range] " : match a single character present in the rang
- " \s " : match any white space character [\r\n\t\f ]
- " $ " : assert position at end of the string
- " ^ " : 断言字符串开头的位置
- " \d{x} " : 匹配一个数字正好 x 次
- “ - ” ：匹配字符 - 字面意思
- " [range] " : 匹配范围内的单个字符
- " \s " : 匹配任何空白字符 [\r\n\t\f ]
- " $ " : 断言字符串末尾的位置
You can test it by yourself at : http://codepen.io/anon/pen/XJgeeV
您可以在以下网址自行测试：http: //codepen.io/anon/pen/XJgeeV
[ Updated following David Faber's advice ]
[根据 David Faber 的建议更新]
回答by Yagiz
When I googled it, there are some great examples such as Date Form Validation
当我用谷歌搜索时，有一些很好的例子，比如日期表单验证
