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Implement Jquery.tmpl (template) with KnockoutJS, ASP.NET MVC 3

, 24 Apr 2012
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Implementing Jquery.tmpl (template) with KnockoutJS, ASP.NET MVC 3.

In continuation of my previous post on search implementation using knockoutjs. In the previous example I showed how to bind a grid with the KnockoutJS observable array object. Because of observable characteristics, once the view model updates the knockoutjs engine renders HTML controls which are bound to that view model. I found one problem with it when dealing with huge data.

I had a requirement to show thousands of records in a grid without paging. If I use the knockoutjs way of binding with an HTML table it takes time to load and the browser also pops up a message about an “Unresponsive script” which asks to further render or to stop the script.

I wanted to use the same view model for data but I didn’t want to use the “data-bind” attribute in HTML. I found a good jQuery plugin (jQuery.tmpl) through which we can define a template and can inject data at runtime. Here I’ll show you how to implement it. I am using the same code base which I used in my previous post.

How to reproduce the error?

Let us say I am adding 20000 employees in a collection and it will render on the UI.

image

Binding with the HTML table:

image

I get the following error message.

image

Solution:

Implementation of Jquery.tmpl

To avoid this message and to render data fast I chose jquery.tmpl to render the HTML table. Here are the steps which will define the implementation:

Step1: Download the Jquery.tmpl.js file from jquery

http://github.com/jquery/jquery-tmpl

http://ajax.microsoft.com/ajax/jquery.templates/beta1/jquery.tmpl.min.js

and save in the scripts folder. You can directly reference the script file as well if you want.

Step 2: Reference jquery.tmpl.min.js in the relevant page or the _layout.cshtml file.

<script src="@Url.Content("~/Scripts/jquery.tmpl.min.js")" 
    type="text/javascript"></script>

You can also give the direct path from

<script src="http://ajax.microsoft.com/ajax/jquery.templates/beta1/jquery.tmpl.min.js" type="text/javascript"></script>

Step 3: Create a blank tbody where data will populate.

<tbody id="datalist"></tbody>

Step 4: Create a template of the <tr> element in which data will render.

image

Step 4: Populate data in the template.

image

Step 5: Run the application.

image

image

You can find the code here.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Neeraj Kaushik 1980
Architect Initto Technologies India Pvt Ltd
India India
• Technical Architect with 9 years of Application development experience
• Good knowledge and expertise on multiple areas of technologies and their business applications
• Strong experience in high performance and business critical applications.
• Experience in creating framework, Code generators, and UML diagrams.
• Developed messaging framework for Algo Trading, technical analysis tool, market feed client Api, Payment Solutions for SWIFT, Internationalization for Core Banking Solution product etc.
• Practical knowledge of building and practicing agile delivery methodologies (SCRUM & TDD).
• Proven ability in producing technical documentation and presentation to clients.
• Active participation in trainings, article writing & taking initiatives.
• Passion to get knowledge from various resources acquires best practices.
• Good understanding of financial domain especially in investment banking and banking domain.
Specialties
 
Technical Architectures, Multi-threading Architecture, Algo Trading systems, Messaging Framework, FIX Implementation, Technical Analysis & Charting, ActiveMQ, MSMQ, C#, WinForms, ASP.NET MVC, Jquery, WCF, Sql Server 2008, Oracle, TFS, TDD, QuickFix, Open Source Tools & Framework.
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Comments and Discussions

 
Question[My vote of 1] jQUery.tmpl is obsolete... PinmemberSeishin#25-Apr-12 3:01 
QuestionImplementation PinmemberManov rao24-Apr-12 19:47 

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