JavaScript中的正则表达式以检查日期和时间

Question

I need to check whether the text contains a date part with it.

for ex: mytext_12/26/2011_11:51_AM or someText_12/26/2011_13:51_PM have a date part it returns true.

I am not too good with expressions so looking for one. the format of the date - time part is fixed.

i got a way out for it but failing for time .

var containsDate = ~str.search(/\d{1,2}\/\d{1,2}\/\d{4}/);

it checks the date part perfectly but when i am trying for the time part i am messing it up some where .

_\d{1,2}:\d{2}_(?:AM|PM) this is the part for time but i am not able to generate the final regex by combining this two.

Answer 1

Try,

.search(/[0-9]{2}\/[0-9]{2}\/[0-9]{4}_[0-9]{2}:[0-9]{2}_(AM|PM)/)

A good resource for regex, MDN:Regular Expressions

Answer 2

尝试，

.search(/\d+\/\d+\/\d{4}_\d+:\d+_(AM|PM)/)