Menu
I am trying to extract all IP addresses from an Apache log file input in the textarea field. I am using regular expressions for extracting the IP addresses. I want to see all the IP addresses printed on the screen. I cannot understand what I am doing wrong. Kindly help
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>RegEx_example</title>
</head>
<body style = "background-color: lightgrey">
<center>
<h3><u>Log Miner</u></h3>
<br /><hr />
<h5>Paste your Apache log file in the box below and click on Mine!</h5>
<textarea rows="25" cols="200" form="mine_log" id = "logs">
</textarea>
<form id = "mine_log" method = "" onsubmit="parseLogs(document.getElementById('logs').value)">
<input type = "submit" value = "Mine!!" />
</form>
<script language="JavaScript" type="text/javascript">
function parseLogs(text) {
var re = new RegExp("^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$");
var myArray = re.exec("text");
document.write(myArray.toString());
}
</script>
</center>
</body>
</html>
619
You need to:
"\." translates into .)^ and $)/g)String#match() with the regex (in case you do not need the values captured with the capturing groups, else, you need to run the RegExp#exec inside a loop to collect those).function parseLogs(text) {
var re = /([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})/g;
var myArray = text.match(re);
document.write("<pre>"+JSON.stringify(myArray, 0, 4) + "</pre>");
}<h5>Paste your Apache log file in the box below and click on Mine!</h5>
<textarea rows="5" cols="200" form="mine_log" id = "logs">
12.34.56.76
45.45.34.24
</textarea>
<form id = "mine_log" method = "" onsubmit="parseLogs(document.getElementById('logs').value)">
<input type = "submit" value = "Mine!!" />
</form>Note that in case you need no captured values, you may even remove the ( and ) from your pattern.
124
I see a typo in the code.
var myArray = re.exec("text"); you are just running the regex on the string text
should be
var myArray = re.exec(text); run the regex on the variable text
41
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
