将JSON内容显示为HTML

Question

你能告诉我我想要显示的文本是如何出现在HTML中的吗？如果你能帮助我，我会很高兴，这是代码。

*<script>
                var xmlhttp = new XMLHttpRequest();
                var url = "RoadBikes-Michał_Nowakowski.json";

                xmlhttp.onreadystatechange = function() {
                    if (this.readyState == 4 && this.status == 200) {
                        var myArr = JSON.parse(this.responseText);
                        myFunction(myArr);
                    }
                };
                xmlhttp.open("GET", url, true);
                xmlhttp.send();

                function myFunction(arr) {
                    var out = "";
                    var i;
                    console.log(arr.RoadBikes.bike);
                    for(i = 0; i < arr.RoadBikes.bike.length; i++) {
                        out +=  "<li><ul>" + 
                        "<li>Nazwa: " +  arr.RoadBikes.bike[i].brand.name1 "</li>"+
                        "</ul></li>";
                    }
                    document.getElementById("tak").innerHTML = out;
                }
            </script>

*这是我的json document我想只显示RoadBikes-＆gt; bike-＆gt; brand-＆gt; name1