validating in JS- no spaces in a word

**d-machine** · 06-13-2008, 12:29 PM

I want to check some form input, that it should be only one word without spaces and that it will be at least 6 characters.

I succeeded checking that length of the word, but didn't know what to do about the spaces.

my function:

PHP Code:


// If it is at least 6 characters it attaches class="welldone" to the containing fieldset.



function checkUsernameForLength(whatYouTyped) {

    var fieldset = whatYouTyped.parentNode;

    var txt = whatYouTyped.value;

    if (txt.length > 5) {

        fieldset.className = "welldone";

    }

    else {

        fieldset.className = "";

    }

}

**Nile** · 06-13-2008, 09:08 PM

Just replace the spaces using this method: http://www.tizag.com/javascriptT/jav...ng-replace.php

**d-machine** · 06-14-2008, 05:06 AM

Originally Posted by Nile

Just replace the spaces using this method: http://www.tizag.com/javascriptT/jav...ng-replace.php

hi thanks but i don't want to replace it, i want to write some condition which will check it

**rangana** · 06-14-2008, 05:59 AM

Use indexOf().

Code:

if(!(txt.indexOf('')==-1))
	{
	alert('spaces is present');
	}

Hope it helps.

**coothead** · 06-14-2008, 06:36 AM

Hi there d-machine,

this will check for 6 or more letters...

Code:


<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
   "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

<script type="text/javascript">
window.onload=function() {
document.forms[0][1].onclick=function() {
if(document.forms[0][0].value.match(/^[a-zA-Z]{6,}$/)){
    alert('the input matches the requirement');
 }
else {
   alert('the input does not match the requirement');
   }
  }
 }
</script>

</head>
<body>

<form action="#">
<div>
 <input type="text">
 <input type="button" value="check">
</div>
</form>

</body>
</html>

coothead