The control of up and down or left and right key on keyboard using jquery in Android
<p>I am using jquery and jquery mobile to develop the program.</p>

<pre><code>$(document).keydown(function(e) {
                        if ( e.which == 19)  { //  get the up key
                        alert("111111");
                        }) 
</code></pre>

<p>I check online. It is said only Android versions 4.1.1 can support keyboard. Otherwise I need to write about the return value. </p>

<p>Who knows how to use jquery set the keyboard? </p>

<p>Thanks in advance!</p>
