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yes, I was trying something like that as well, but still didn't work. 
 

<pre><code class="code-10 nolinks" id="code-20-41396311-1">jQuery(function ($) {
 $('#btnleftitem').keypress(function (event) {
 var keycode = (event.keyCode ? event.keyCode : event.which);
 if(keycode == '34')
 {
 keycode == '34';
 }
 
 event.stopPropagation();
 });
 });
</code></pre>
</div>

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Hi, 
please correct me if I am wrong, but I guess a keypress on a button is not really realistic as it will not really get the focus (besides moving with a tab key)?
</div>

Untitled.png

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I believe I have figured out your issue. First you will have to capture the keydown event on your document. Keypress events mostly work on normal character keys like a-z &nbsp;for example. You will also need to remove the quotes from around your keycode. &nbsp;Keycodes have a type of number and you are checking for a string. 
 
 
 
Here is a link to a fully working example(Please note that I removed some of your @ notations in my example code because I am not using the same framework/environment you are). 
 
&nbsp;Code Pen Example : <a href="http://codepen.io/larryjoelane/pen/LGWQYo" rel="ugc">http://codepen.io/larryjoelane/pen/LGWQYo</a> 
 
 
 
Here is the JavaScript code you will need. I have simplified it a bit and added comments to help understand whats going on. 
 

<pre><code class="code-10 nolinks" id="code-20-41399126-1">(function($){//begin closure
 
 //click the button when the user presses the page down key
 
 $(document).on(&quot;keydown&quot;,function (event) {
 
 
 //if the pagedown key is pressed(keycode 34)
 if(event.which === 34){//begin if then
 
 
 //click on the btn-primary
 $(&quot;#btnrightitem&quot;).click();
 
 
 }//end if then
 
event.stopPropagation();
 
 
 });
 
 
 
 
})(jQuery);//end closure



//This must be place outside of the closure above or it will not be accessible by the on click event of the button inside the mark up &quot;GetRightItem Not Defined Error will be returned&quot;
function GetRightItem(){//begin function
 
 //do something cool! 
 
 alert(this.name + &quot; function called!&quot;);
 
 }//end function
</code></pre>
 
I have also attached a zip file containing the example you can run offline or on your webserver(Just make sure if you run it outside of a webserver that you use chrome or firefox. &nbsp;Internet Explorer doesn't serve work well with loading external resources outside of the html file.
</div>

<div>
<div class="content wysiwyg-content">
Hi Guys, 
 
I have mvc webapp and I'm trying to implement keypress function with jquery. 
 
whet I'm trying to do is when user click on pagedown button it will click automatically on this button below: 

<pre><code class="code-1 nolinks" id="code-10-28909576-1"> &lt;input type=&quot;button&quot; class=&quot;btn btn-sm btn-primary&quot; @isr value=&quot;&gt;&gt;&quot; onclick=&quot;GetRightItem(@Model.srno,'@Model.ponumber')&quot; id=&quot;btnrightitem&quot; /&gt;
</code></pre>
 
I was trying to do something like this:(which didn't work). 
 

<pre><code class="code-1 nolinks" id="code-10-28909576-2">jQuery(function ($) {
 $('#btnleftitem').keypress(function (event) {
 var keycode = (event.keyCode ? event.keyCode : event.which);
 keycode == '33' 
 event.stopPropagation();
 });
 });
</code></pre>
</div>
</div>

Hi Guys,

I have mvc webapp and I'm trying to implement keypress function with jquery.

whet I'm trying to do is when user click on pagedown button it will click automatically on this button below:
(CODE)

I was trying to do something like this:(which didn't work).

(CODE)

Jquery  key press

jQuery (Core) is a cross-browser JavaScript library that provides abstractions for common client-side tasks such as Document Object Model (DOM) traversal, DOM manipulation, event handling, animation and Ajax. jQuery also provides a platform to create plugins that extend jQuery's capabilities beyond those already provided by the library.