Restriction to filed If not start with specific letters

[Sirri]

Hi All,

I have requirement as per the below:

We have one field( Machine Name). For that field restriction as per the below:

Text can only be 9 characters long. Cannot contain special characters or spaces. Must start with 'RTH'. If validation is not followed, an error message pops up ""Machine Name must start with RTH and is 9 characters long"" and the text should be clear .

Please provide the code. How can I achieve this.

Thank you.

[Community Alums]

Hi @Sirri ,

Try this - Onsubmit client script

  // Regular expression for validation
    var regex = /^RTH[a-zA-Z0-9]{6}$/;
    // Validate the machine name
    if (!regex.match(g_form.getValue("Replace the field"))) {
		g_form.addErrorMessage("Machine Name must start with RTH and is 9 characters long");
		return false;
	}

Ex:

Output 😍:

Hope this helps!!!