registerJs 中怎么使用Url::to(['abc/bcd']) [ 2.0 版本 ]

$url = Url::to(['delete'],true);
$js = <<<JS
    function deleteUser(uid){
        if(!confirm('确认要执行该操作吗?')){
                return false;
            }
         $.ajax({
            url: '$url',
            type: 'post',
            data: {uid:uid},
            success: function (data) {
                if(data.status == 1){
                    location.reload();
                }else{
                    layer.msg(data.msg);
                }
            }
        });
    }
JS;