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

, 24 Apr 2012 CPOL
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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)

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About the Author

Neeraj Kaushik1980
Architect Saxo India Pvt Ltd
India India
• Solution Architect /Sr. Lead Developer with 11+ years of professional experience with more emphasize on .net technology and open for any emerging technologies.
• Strong experience in drafting solutions, stakeholder communications and risk management.
• Proved strong coding and designing skills with agile approach (TDD, XP framework).
• Delivered many projects with involvement from inception to delivery phase.
• Strong experience in high performance, multithreaded, low latency applications.
• Have strong experience in web oriented technologies.
• Playing vital role in technical foundation of projects and delivery.
• Ability to communicate with the business and technical stake holders effectively.
• Strong experience in technologies for Capital Market Domain: Front Office & BackOffice (Algorithm Trading tools, messaging framework, Enterprise bus, integration of FIX APIs and many proprietary trading APIs).
• Functional knowledge of Wealth Management System, Equities, Fixed Income, Derivatives, Forex.
• Practical knowledge of building and practicing agile delivery methodologies (SCRUM & TDD).


Technical Expertise: Solution Architectures, Low Latency applications, Algo/ Properietary Trading Systems, Messaging Framework, Integration via FIX protocol APIs (QuickFix, QuickFix/N), ActiveMQ, MSMQ, C#, WinForms, ASP.NET MVC, Jquery, WCF, Sql Server 2008, TFS, TDD

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Comments and Discussions

 
Question[My vote of 1] jQUery.tmpl is obsolete... Pin
Seishin#25-Apr-12 3:01
memberSeishin#25-Apr-12 3:01 
QuestionImplementation Pin
Manov rao24-Apr-12 19:47
memberManov rao24-Apr-12 19:47 

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