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Simple .replace() doesn't seem to work

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youradds

youradds

Programmer
Jun 27, 2001
817
GB
Hi,

I'm trying to replace " " with "_" in a username string, but even in the most basic form it doesn't seem to work?

Code: 
<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>New Page 31</title>
<script type="text/javascript" src="[URL unfurl="true"]http://domain.com/new_js/jquery.js"></script>[/URL]

</head>

<body>

<script>

function do_replace() {
	username_val = $('#comm_username').val();
	username_val.replace(/\s+/i, "_");
	alert("NEW: " + username_val);
}
</script>

<form onsubmit="return do_replace();">
<input name="comm_username" id="comm_username" />
<input type="submit" value="test" />
</form>

</body>

</html>


I've also tried:

Code: 
	username_val.replace(" ", "_");

Any suggestions? Probably missing something silly :|

TIA

Andy
 
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Hi

[ul]
[li]The [tt]replace()[/tt] method not alters the object itself, the modified string is only returned[/li]
[li]The use of the [tt]i[/tt] modifier is useless here, as case sensitivity has no effect on whitespace characters[/li]
[li]Your regular expression will replace only the first occurence, but I guess you want to replace all, so use the [tt]g[/tt] modifier[/li]
[/ul]
Code: 
[highlight]username_val[teal]=[/teal][/highlight]username_val[teal].[/teal][COLOR=darkgoldenrod]replace[/color][teal]([/teal][fuchsia]/\s+/[highlight]g[/highlight][/fuchsia][teal],[/teal] [green][i]"_"[/i][/green][teal])[/teal]

Feherke.
 
Upvote 0 Downvote
Doh -knew it had to be something simple :D

This works perfectly now - thanks :)

username_val = username_val.replace(/\s+/gi, "_");
 
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