Menu
Here is a textarea.(IPv4, Domain)
96.17.109.65 fox.com
And I want to change IP value into another one. like this,
74.125.71.106 fox.com
I guess it will be like
$('textarea').find('some regular expressions..').val('another one...');
Please help me. I just wanna learn regular expressions.. thanks.
519
\d{1,3}\b will match any IP address just fine. But will also match 999.999. 999.999 as if it were a valid IP address. If your regex flavor supports Unicode, it may even match ١٢٣.
To check if a string is a valid IP address (IPv4) in JavaScript, we can use a regex expression to match for the allowed number range in each of the four decimal address sections.
An IP address consists of four numbers (each between 0 and 255) separated by periods. The format of an IP address is a 32-bit numeric address written as four decimal numbers (called octets) separated by periods; each number can be written as 0 to 255 (e.g., 0.0. 0.0 to 255.255. 255.255).
Matching an IP address using regular expression is not as easy as it sounds. There are two methods available:
simple, but can lead to false-positives:
\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b
complex, but always correct:
\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b
If you want to replace it, you'll need something like this (using the simple RegExp as an example):
var textarea = $('textarea');
textarea.val(textarea.val().replace(/\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b/g, '74.125.71.106'));
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
