Validating multiple textboxes

prakus · Aug 12, 2005

I have a form with multiple textboxes. The naming convention is dynamic (examples Tbx102, Tbx105 etc...). The number of textboxes are dynamic too. I need to limit the entry in each textbox to 50 characters and notify the user if he/she has exceeded the limit.

Can someone help me with this?

Thank you.
PKS.

JontyMC · Aug 12, 2005

Why not use maxlength="50"?

Jon

"I don't regret this, but I both rue and lament it.

4345487 · Aug 12, 2005

This should get you started.

<html>
<head><title>Test</title>
<script>
function validateFields()
{
/* Loop trhought all the elemnst in the form */

for (var i = 0; i < document.test.elements.length; i++)
{
/* check if the element is a text box */
if(document.test.elements.type == "text")
{
/* get the field id */
var fldId = document.test.elements.id;

/* get the field value */
var fldValue = eval("document.test." + fldId + ".value");

/* check if the value is greater than 5 and if it is
* go back to tah field
*/
if(fldValue .length > 5)
{
alert("The input value can't be greater than 5 characters!!!");
eval("document.test." + fldId + ".select()");
eval("document.test." + fldId + ".focus()");
return false;
}
}
}
return true;
}
</script>
</head>
<body>
<form name="test" action="">

<input type="text" name="text1" id="text1" value=""><br>
<input type="text" name="text2" id="text2" value=""><br>
<input type="text" name="text3" id="text3" value=""><br>
<input type="text" name="text4" id="text4" value=""><br>
<input type="text" name="text5" id="text5" value=""><br>
<input type="button" name="btn" id="btn" value="Button" onClick="return validateFields();"><br>
</form>
</html>

prakus · Aug 12, 2005

Thank you. That works great !!!

PKS.

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Validating multiple textboxes

prakus

Programmer

JontyMC

Programmer

4345487

Programmer

prakus

Programmer

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