<script>
const random = (length = 8) => {
// Declare all characters
let chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
//Pick characters randomly
let str = '';
for (let i = 0; i < length; i++) {
str += chars.charAt(Math.floor(Math.random() * chars.length));
}
return str;
if(!jQuery('#field_entrytoken').val()){
  jQuery('#field_entrytoken').val(random(20)); //Change 20 to any numerical value you want for the amount of characters to apply to the "Entry Token". The more characters that you use, the less likely it will be cracked
}
}
</script>