Add radio button instead of checkbox use jquery

//Add radio button instead of checkbox for user profile fields
$(document).ready(function(){

//Interest - user field
$('#field_19').find('input:checkbox').each(function() {
$("#field_19 label").removeClass("custom-checkbox");
$("<input type='radio' />").attr({ name: this.name, value: this.value, checked: this.checked }).insertBefore(this);
}).remove();


});