How to extract numbers from string in Javascript using regex [duplicate]

Question

I have the following string

/Date(1317772800000)/

I want to use a Javascript regular expression to extract the numerical portion of it

1317772800000

How is this possible?

And what exactly is the problem with yourString.substring(6,19)? — barak manos
– barak manos, Commented May 15, 2014 at 16:53

devnull69 · Accepted Answer · 2014-05-15 16:51:31Z

3

That should be it

var numPart = "/Date(1317772800000)/".match(/(\d+)/)[1];

answered May 15, 2014 at 16:51

devnull69

16.6k9 gold badges55 silver badges67 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

daZza · Accepted Answer · 2014-05-15 16:52:09Z

3

No need for regex. Use .substring() function. In this case try:

var whatever = "/Date(1317772800000)/";
whatever = whatever.substring(6,whatever.length-2);

answered May 15, 2014 at 16:52

daZza

1,6872 gold badges30 silver badges52 bronze badges

wvandaal · Accepted Answer · 2014-05-15 16:51:35Z

1

var re = /\/Date\((\d{13})\)\//;
re.exec('/Date(1317772800000)/');
=> ["/Date(1317772800000)/", "1317772800000"]

If you don't care about matching the date portion of the string and just want extract the digits from any string, you can use this instead:

var re = /(\d+)/;
re.exec('/Date(1317772800000)/')
["1317772800000", "1317772800000"]

answered May 15, 2014 at 16:51

wvandaal

4,2952 gold badges18 silver badges27 bronze badges

No it won't; this will match his entire string.

@AndrewArnold no... it won't. Check out the link...