1.How to only allow alphabets for a field on a onchange client script? 2.How to allow only alphanumeric characters for a field on onchange client script?

[mrafi]

Code pls?

[michal29]

Hello Mohammed,

You can use regular expression for that: like described here regex - Regular Expression for alphanumeric and underscores - Stack Overflow

For service-now I recommend using it in this manner:

var field = g.form.getValue('FIELD_YOU_WANT_TO_TEST');
var testREG = /^[a-zA-Z0-9_]*$/;

if (!testREG.test(field)) {
  // HERE IS WHAT HAPPENS IF ENTERED VALUE DOES NOT MATCH
} else {
  // HERE IS WHAT HAPPENS IF ENTERED VALUE DOES MATCH
}

Regards,

Michal

[Mujtaba Amin Bh]

1. You can customize the below code as per your requirement:
3. function onLoad() {  
4.   // CHANGE: 'short_description' to your field name  
5.   g_form.getControl('short_description').observe('keypress',function(evt) {  
6.       // Browsee black magic voodoo to get the CharCode pressed  
7.       var charCode = (typeof evt.which == "number") ? evt.which : evt.keyCode;  
8.  
9.       // If keyed pressed is the equivalent of 0-9 (charcode 48-57) or a period (charcode 46)  
10.       if ((evt.keyCode >= 48 && evt.keyCode <= 57) || (evt.keyCode == 46)) {  
11.       // Do nothing  
12.       }  
13.       else {  
14.       // Suppress keypress  
15.       evt.preventDefault();  
16.       }  
17.   });  
18. }