how to disallow special characters in forms

[dreamydesigner]

I need to make sure that special characters cannot be entered into my caspio forms. Does anyone know how to set this?

[davep]

You can specify fields as EMAIL and ensure no invalid character is entered. Aside from that if you want to prevent certain characters from your text fields and text area fields you would need a JavaScript code to do that.

[autonumber]

Hi!! Just to update this post, It appears Caspio already has a HowTo Documentation for removing special characters from input fields. Here is the link: https://howto.caspio.com/tech-tips-and-articles/advanced-customizations/remove-special-characters-for-input-fields/

I hope this helps!!

[cheonsa]

Hi!

Just wanted to share my solution with you. If you would like to have an alert, you can use this script in the Footer of the DataPage:

<script type="text/javascript">
document.addEventListener('BeforeFormSubmit', function () {

event.preventDefault();

	var username = document.getElementById("InsertRecordFIELDNAME").value;
	var inputRGEX = /^[a-zA-Z0-9 ]*$/;
	var inputResult = inputRGEX.test(username);

	if(!(inputResult))
	{
		alert("Please only use standard alphanumerics");
	}
	else 
	{
		document.forms["caspioform"].submit();
	}
});

</script>

Please note to replace the FIELDNAME in the JavaScript with name of the field.

[Meekeee]

You may also try this:

<script type="text/javascript">
document.addEventListener('BeforeFormSubmit', function (e) {
  
	var username = document.getElementById("InsertRecordFIELDNAME").value;
	var inputRGEX = /^[a-zA-Z0-9 ]*$/;
	var inputResult = inputRGEX.test(username);

	if(!(inputResult))
	{
		e.preventDefault();
		alert("Please only use standard alphanumerics");
        
	}
});

</script>

[futurist]

Hi @dreamydesigner,

You may refer to this: