JavaScript如何将数据从ajax（firebase数据）传递到HTML

Question

HTML

  <div id="page-wrapper">
        <div class="row">
            <div class="col-lg-12">
                <h3 class="page-header"><?=$title?></h3>
            </div>
            <!-- /.col-lg-12 -->
            <p>
                <ol id="valueList">
                aa
                </ol>
            </p>
        </div>
    </div>

这是我的AJAX代码，此代码没有显示任何错误，只有问题不在HTML中显示

    firebase.initializeApp(config);
    database = firebase.database();

    var refDeleafing = database.ref('Deleafing');
    refDeleafing.on('value', gotDataDeleafing, errData);

    function gotDataDeleafing(data) {

        var blocks = data.val();
        var keys = Object.keys(blocks);
        console.log(keys);
        for(var i = 0; i < keys.length; i++) {
            var k = keys[i];
            var deleafingBlock = blocks[k].deleafingBlock;
            var li = document.createElement('deleafingBlock');
            $(li).parent("valueList");
        }

如果我将使用li.parent（＆＃34; valueList＆＃34;）;它显示错误父不是函数。无论如何如何工作？