regex - Javascript regular expression match and get -

i have string in javascript:

'nearly 2 pound/12345'

and need check if string match pattern

'some string useless/number'

and number.

i have created regex /\/\d+/g number,but char '/'.

so how can solve these?

if expression "forward-slash followed numbers", should suffice

let numbers = (/\/(\d+)/.exec(str) || []).pop()

to break down...

create regex forward-slash followed one-or-more digits (that want capture)
```
let regex = /\/(\d+)/ 
```
you may want / need tweak make more specific. example numbers appear @ end of string, use /\/(\d+)$/.
execute regex against string. either return null no match or array entire match @ index 0 , capture group @ index 1, eg ["/12345", "12345]
```
regex.exec(str) 
```
create expression results in array, if no match made
```
let arr = (regex.exec(str) || []) 
```
use array.prototype.pop last array entry
```
let numbers = arr.pop() 
```

numbers undefined if there no match.

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