Pad leading 0 in front of string 1

jnyvtka · Feb 27, 2002

Hello I have a form in which a user may enter 0-5 characters. If the user enters less then 5 numbers in this field I need to pad it with 0's to make it 5. Can anyone help me out with this or lead me in the right direction here is what I have tried so far and nothing....

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<script language="JavaScript">
function zeroPad() { // pad string

if (document.forms1.C4.length == 1) {
(0000 + document.forms1.C4.value);
}
}

</script>
<body bgcolor="#FFFFFF" text="#000000">
<form name="form1" method="post" action="">
<p>
<input type="text" name="C4" onChange="zeroPad()">
</p>
<p>
<input type="text" name="textfield">
</p>
</form>
</body>
</html>

I am not a javascript programmer so please forgive this question as it is probably very easy to write however I do no have a good command of the language.

Thanks-
K.

elegidito · Feb 27, 2002

document.forms1.C4.value = 0000 + document.forms1.C4.value;

i think thats your problem. hope it helps Suceess, thats the way you spell success!
Got a question? Ask IMOZRMY!

thedji · Feb 27, 2002

In the script section of your page put this function in:

Code:

function padNumber(oPadder)
{
	sPadThis = oPadder.value;
	sPadding = &quot;00000&quot;;
	sPadded = sPadding.substr(0, sPadding.length - sPadThis.length) + sPadThis;
	oPadder.value = sPadded;
}

Change your input tag to be:

Code:

<input type=&quot;text&quot; name=&quot;C4&quot; onChange=&quot;padNumber(this)&quot;>

jnyvtka · Feb 28, 2002

!1 that worked thanks for the response.

I think I can follow everyting in that function so I learned something also.....

trollacious · Feb 28, 2002

How about

while (document.forms1.C4.value.length < 5)
{
document.forms1.C4.value='0' + document.forms1.C4.value
}

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Pad leading 0 in front of string 1

jnyvtka

Programmer

elegidito

Programmer

thedji

Programmer

jnyvtka

Programmer

trollacious

Programmer

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