javascript remove lines matching pattern

Question

I'm trying to remove lines matching pattern 'WAN ipv4-address' from textarea '#textarea'

$("#textarea").val().replace(/WAN ipv4-address/g, '')

So I think above will only remove 'WAN ipv4-address' pattern from lines (in fact it doesn't even do this one for me). How to remove lines based on matching pattern ?

brso05 · Accepted Answer · 2015-08-12 18:15:53Z

2

You are using the return of .replace():

$("#textarea").val($("#textarea").val().replace(/WAN ipv4-address/g, ''));

Strings are immutable this will return a new String you must use the new String.

answered Aug 12, 2015 at 18:15

brso05

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Avinash Raj · Accepted Answer · 2015-08-12 19:23:38Z

1

If ou want to remove the whole line then add .* before and after.

$("#textarea").val().replace(/.*WAN ipv4-address.*/g, '')

If you want to assign it back.

$("#textarea").val($("#textarea").val().replace(/.*WAN ipv4-address.*/g, ''));

edited Aug 12, 2015 at 19:23

answered Aug 12, 2015 at 18:21

Avinash Raj

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