function onChange(control, oldValue, newValue, isLoading) { if (isLoading || newValue == '') { return; } g_form.hideErrorBox('user_email'); var pattern =/^[a-zA-Z0-9]*$/; // regex pattern if(!pattern.test(newValue)){ g_form.showErrorBox('user_email', getMessage('Alphanumeric without space allowed'));//show error messege g_form.setValue('user_email', ''); } }
Regex Validation only Alphanumeric without space allowed ServiceNow
Working Code Edited question July 24, 2023