<form id="myform" autocomplete="off">
    <input autocomplete="off" type="text" name="name" />
    <input autocomplete="off" type="text" name="phone" />
</form>

$(document).ready(function(){
    $( document ).on( 'focus', ':input', function(){
        $( this ).attr( 'autocomplete', 'off' );
    });
});

$(document).ready(function(){
    $("input").attr("autocomplete", "off");
});

<form id="myform" autocomplete="dummy-no-auto-complete-fix">
    <input autocomplete="dummy-no-auto-complete-fix" type="text" name="name" />
    <input autocomplete="dummy-no-auto-complete-fix" type="text" name="phone" />
</form>