使用Knockout.js更新UI控件

我正在开发knockout.js，而且是全新的。我从Web API动态获取数据并绑定到表。代码如下：

var RowNumber;
var viewModel = {};
var url_paging = "http://192.192.192.192/api/OLMS/GetOlDetailsByRowNumber?token=" + tokenval + "&rowNumber=1";
$(document).on("pageinit", "#grid_page", function () {
      $.getJSON(url_paging, function (data) {
                var newLeads = ko.mapping.fromJS(data);
                viewModel.model = newLeads;
                RowNumber = data.SequenceNo;
                ko.applyBindings(viewModel, document.getElementById("oltable"));                    
            });
});

and HTML :

<table data-bind="attr: { 'id': OLId }" class="zebra-striped" style="margin: 0 auto;">
                                <tbody>
                                    <tr>
                                        <td colspan="4" style="height: 30px; font-size: 16px; vertical-align: middle; text-align: center; font-weight: bold;">
                                            OPINION LEADER DETAILS FOR <span data-bind="text: OLFirstName"></span><span data-bind="text: OLMiddleName"></span><span data-bind="text: OLLastName"></span>, <span data-bind="text: Degrees"></span>.
                                        </td>
                                    </tr>
                                    <tr>
                                        <td style="width: 10%;">
                                            <img data-bind="attr: {src: 'https://olms.kolonlinemnk.com/Uploads/Mallinckrodt/Photo/1214/' + Photo()}"
                                                 alt="" style="border: 1px solid #DDD; width: 100px; height: 125px;">
                                        </td>
                                        <td style="width: 30%;">
                                            <span data-bind="text: Title"></span>
                                            <br />
                                            <span data-bind="text: Department"></span>
                                            <br />
                                            <span data-bind="text: Address1"></span>
                                            <br />
                                            <span data-bind="text: Address2"></span>
                                            <br />
                                            <a class="nounderline" data-bind="attr: {href: 'tel:' + Phone()}">
                                                <span data-bind="text: Phone"></span>
                                            </a>
                                        </td>
                                        <td style="width: 30%;">
                                            Influence: <br />
                                            Category: <br />
                                            Tier: <span data-bind="text: Tier"></span>
                                            <br />
                                            Top 25<br />
                                            Type: <br />
                                            Interests:
                                        </td>
                                        <td style="width: 30%;">
                                            Distance: <br />
                                            Last Interaction:<span style="color: red;"></span><br />
                                            <br />
                                            <a href="mailto:steve.abram@mcwpain.org">
                                                <img class="imagepadding" alt="" src="images/icon-email.png">
                                            </a>
                                            <a target="_parent"
                                               href="interactionview.html">
                                                <img class="imagepadding" alt="" src="images/icon-addcomment.png">
                                            </a>
                                            <a target="_parent"
                                               href="pov.html">
                                                <img class="imagepadding" alt="" src="images/icon-statistics.png">
                                            </a>
                                            <a target="_parent" href="profile.html">
                                                <img class="imagepadding" alt="" src="images/icon-insertpictureleft.png">
                                            </a>
                                            <a target="_parent" href="map_directions.html">
                                                <img class="imagepadding" alt="" src="images/icon-automobile-car.png">
                                            </a>
                                        </td>
                                    </tr>
                                </tbody>
                            </table>

我遇到以下错误：

knockoutjs不能对同一元素多次应用绑定

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如何使用不同的数据更新相同的UI？

您使用的映射插件有点错误，需要3个参数

ko.mapping.fromJS(data, options, objectToUpdate);

参见示例

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您应该只调用一次

ko.applyBindings

，而不是在可能被多次调用的事件处理程序中

ko.mapping.fromJS(data, options, objectToUpdate);