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POKnockout loading data very slowly
 

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    <p>I am calling WCF service to load data via jquery ajax calls. WCF service returns data very fast but knockout is loading that data very slowy. Below is my call to wcf service using jquery ajax</p> <pre><code> function loadData(id) { var input = { Id: id }; $.ajax({ url: "../Service/Table/TableData", type: "PUT", contentType: 'application/json', processData: false, data: JSON.stringify(input), error: function (XMLHttpRequest, textStatus, errorThrown) { alert(errorThrown); }, success: function (allData) { var mappedData= $.map(allData, function (item) { return new TableData(item); }); self.TableDataList(mappedData); } }); } </code></pre> <p>Below is my view</p> <pre><code>&lt;div style="overflow: hidden;margin-top: 30px;margin-left: 10px;float:left;" &gt; &lt;table style="width: 100%" &gt; &lt;colgroup&gt; &lt;col /&gt; &lt;col /&gt; &lt;col/&gt; &lt;/colgroup&gt; &lt;thead&gt;&lt;tr&gt; &lt;th style="padding: 0px"&gt;Id &lt;/th&gt; &lt;th style="padding: 0px"&gt;Name&lt;/th&gt; &lt;/tr&gt; &lt;/thead&gt; &lt;/table&gt; &lt;div style="overflow: auto;height: 490px;"&gt; &lt;table id ="Table1" class="Hover" style="width: 100%;" &gt; &lt;colgroup&gt; &lt;col style="width: 20px"/&gt; &lt;col style="width: 80px"/&gt; &lt;col/&gt; &lt;/colgroup&gt; &lt;tbody data-bind="foreach: TableDataList"&gt; &lt;tr&gt; &lt;td style="padding: 0px;text-align: left" data-bind="text: Id" &gt;&lt;/td&gt; &lt;td style="padding: 0px;" data-bind="text: Name "&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt; &lt;/table&gt; &lt;/div&gt; </code></pre> <p>I am loading about 20000 records and it takes 2 min to load page. How to avoid this?</p> <p><strong>UPDATE1</strong></p> <p>Will using jquery template solve the issue or need to do paging?</p> <p><strong>UPDATE2</strong></p> <p>Here is my code for TableData class</p> <pre><code> function TableData (data) { this.Id = ko.observable(data.Id); this.Name = ko.observable(data.Name); this.LastName = ko.observable(data.LastName ); this.DateOfBirth = ko.observable(data.DateOfBirth ); this.Age= ko.observable(data.Age); } </code></pre>
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    1. COThe obvious fix is to not load 20000 record, but do server side paging...
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    2. CO@nemesv but server is returning data very quickly. Its only this knockout loading it very slowly
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    3. CO@Happy it will obviously be slow as it's going to be a heavy operation looping through 20000 records and creating elements. Obvious solution would be to implement paging (server and/or client side)
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