---
title: "Inga bindesträck"
type: "forum-thread"
url: "https://www.webforum.nu/amne/javascript/68057-inga-bindesträck"
topic: "JavaScript"
topic_url: "https://www.webforum.nu/amne/javascript"
author: "skyman"
published: "2003-02-12T12:46:09.000Z"
updated: "2003-02-12T13:33:35.000Z"
replies: 1
views: 172
page: 1
pages: 1
language: "sv-SE"
site: "webForum — webforum.nu"
rights: "Upphovsrätten till varje inlägg tillhör dess författare."
attribution: "Citera som: webForum, https://www.webforum.nu/amne/javascript/68057-inga-bindesträck"
---

# Inga bindesträck

## #1 — skyman, 2003-02-12T12:46Z

Hej,
jag vill inte att man ska kunna skriva i bindesträck i lösenordsrutan.

```
 
regexp="^[A-Za-z0-9]+$";
if(document.form.password.value.search(regexp)==-1){
	alert("L&ouml;senordet f&aring;r bara innehlla A-Za-z0-9.");
                document.form.password.focus();

	return false;
}
```

 
Detta fungerar inte...

Permalänk: https://www.webforum.nu/p/68057

## #2 — dectgap, 2003-02-12T13:33Z

Jag får det till att fungera.

```
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>

<head>
<title>xxx</title>

<script type="text/javascript">

function regga(){
 regexp="^[A-Za-z0-9]+$";
 if(document.forms[0].password.value.search(regexp)==-1){
	alert("Lösenordet får bara innehlla A-Za-z0-9.");
                document.form.password.focus();

	return false;
 } else {
	alert("Bra");
 }
}

</script>

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
</head>

<body>

<form>
<input type="text" name="password" />
<button onclick="regga()">Klick</button>
</form>

</body>

</html>
```

Permalänk: https://www.webforum.nu/p/949383

---

Tråden på webben: https://www.webforum.nu/amne/javascript/68057-inga-bindesträck
