Jquery. Autocomplete modification to implement the keyboard up and down key auto fill example

According to the requirements to achieve by moving up and down the keyboard, the value in the lenovo menu, just like Google baidu query function.
Looking for a long time on the Internet did not find the plug-in can achieve this function, but had to change their own code.
Find keydown and keyup in js to execute the code
As follows:

 
case KEY.DOWN: 
event.preventDefault(); 
if ( select.visible() ) { 
select.next(); 
} 
else { 
onChange(0, true); 
} 
break; 

In the select next (); After joining

 
var selected = select.selected(); 
var v = selected.result; 
$input.val(v); 

After such addition, when the up and down keys input box will have the corresponding value, but the lenovo keyboard cursor is missing.
Find the select next (); Definition of code

 
next: function() { 
moveSelect(1); 
}, 

Add a similar method

 
stay: function() { 
moveSelect(1); 
}, 

then

 
case KEY.DOWN: 
event.preventDefault(); 
if ( select.visible() ) { 
select.next(); 
var selected = select.selected(); 
var v = selected.result; 
$input.val(v); 
select.stay(); 
} 
else { 
onChange(0, true); 
} 
break; 

That's it.

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Thank you very much,

Add a similar method

 
stay: function() { 
moveSelect(1); 
}, After clicking the up and down key, I found that it was interlacing, so I changed it to:  

stay: function() { 
moveSelect(0); 
},