Validate for String

[Pradeep Jagadal]

Hi All,

I am new to servicenow.   I have field on form of type String and I want to validate it for only characters .

Please someone help me to achieve this.

Thanks in advance.

Chinnu

[Pradeep J · Accepted solution]

Hi ,

write onChange() client script on a field as follwo

function onChange(control, oldValue, newValue, isLoading, isTemplate) {

    if (isLoading || newValue === '') {

          return;

    }

    //Type appropriate comment here, and begin script below

  var name=g_form.getValue('<field name>');

  if (!isNaN(name))

    {

  alert("Only Characters are allowed");

  g_form.setValue('<field name>','');

  return false;

    }

}

Thanks

Pradeep D J

PS - Please mark Helpful, Like, or Correct Answer if applicable.

[Pradeep Jagadal]

Thank you Pradeep Its working for me.

[Chuck Tomasi]

I'll assume by 'characters' you mean letters (no numbers or special symbols.)

You can use an onChange or onSubmit client script and use a regular expression something like this: (NOTE: UNTESTED CODE AHEAD)

function onChange(control, oldValue, newValue, isLoading, isTemplate) {

  if (newValue === '') {

      return;

  }

var s = g_form.getValue('your_field_name');

var pattern = /[^A-Za-z]/g;   // checks

if (s.search(pattern) >= 0) {

        g_form.showFieldMsg('your_field_name', 'Only letters are allowed here', 'error');

        return false;

} else {

        g_form.hideFieldMsg('your_field_name');

        return true;

}

}

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[SM_L]

Getting error message as " s is not a defined function() ";