javascript HH:MM:SS 的正则表达式
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Regular expression for HH:MM:SS
提问by user1646528
I have a reqular expression that matches HH:MM e.g. 12:23 and it is:
我有一个匹配 HH:MM 例如 12:23 的正则表达式，它是：
function IsValidTime(timeString)
{
var pattern = /^\d?\d:\d{2}$/;
if (!timeString.match(pattern))
return false;
}
How do I change this line:
我如何更改此行：
var pattern = /^\d?\d:\d{2}$/;
var 模式 = /^\d?\d:\d{2}$/;
to check for a string that is formatted with seconds like so: HH:MM:SSe.g. 12:23:05
检查以秒为格式的字符串，如下所示：HH:MM:SS例如 12:23:05
回答by Tim Pietzcker
/^(?:2[0-3]|[01][0-9]):[0-5][0-9]:[0-5][0-9]$/
for 24-hour time, leading zeroes mandatory.
对于 24 小时制，必须使用前导零。
/^(?:2[0-3]|[01]?[0-9]):[0-5][0-9]:[0-5][0-9]$/
for 24-hour time, leading zeroes optional.
24 小时制，前导零可选。
/^(?:1[0-2]|0[0-9]):[0-5][0-9]:[0-5][0-9]$/
for 12-hour time, leading zeroes mandatory.
12 小时制，前导零是强制性的。
/^(?:1[0-2]|0?[0-9]):[0-5][0-9]:[0-5][0-9]$/
for 12-hour time, leading zeroes optional.
12 小时制，前导零可选。
回答by h2ooooooo
Something as simple as the following should work:
像下面这样简单的事情应该可以工作：
/([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]/g
Regex Explanation:
正则表达式说明：
([01][0-9]|2[0-3])- A collection of the following:
[01][0-9]the characters "0" or "1" followed by any digit between 0 and 9|- or2[0-3]the character "2" followed by a digit between 0 and 3
:a literal colon[0-5][0-9]- any digit between 0 to 5 followed by any digit between 0 and 9:a literal colon[0-5][0-9]- any digit between 0 to 5 followed by any digit between 0 and 9
([01][0-9]|2[0-3])- 以下内容的集合：
[01][0-9]字符“0”或“1”后跟 0 到 9 之间的任何数字|-或2[0-3]字符“2”后跟一个 0 到 3 之间的数字
:字面冒号[0-5][0-9]- 0 到 5 之间的任何数字后跟 0 到 9 之间的任何数字:字面冒号[0-5][0-9]- 0 到 5 之间的任何数字后跟 0 到 9 之间的任何数字
Demo:
演示：
回答by Christoph
Basing on your regex for detecting 99:99:99, the following regex would suffice:
根据您用于检测99:99:99的正则表达式，以下正则表达式就足够了：
/^\d?\d:\d{2}:\d{2}$/
or a bit more sophisticated
或者更复杂一点
/^\d?\d(?::\d{2}){2}$/
but much better would be (because it correctly matches the ranges):
但会更好（因为它正确匹配范围）：
/^(?:[01]?\d|2[0-3]):[0-5]\d:[0-5]\d$/
which would conform the function name IsValidTime...
这将符合函数名称IsValidTime...
回答by sourcecode
Validate time in format as“ hh:mm am/pm ” in javascript
在javascript中以“hh:mm am/pm”格式验证时间
function timeValidation(strTime) {
var timeFormat = /^(?:1[0-2]|0?[0-9]):[0-5][0-9]\s?(?:am|pm)?/;
return timeFormat.test(strTime);
}
timeValidation("12:30 PM") // return true
timeValidation("12:30 PM") // 返回真
timeValidation("12:30 ") // return false
timeValidation("12:30 ") // 返回 false
timeValidation("27:30 AM") // return false
timeValidation("27:30 AM") // 返回 false
