My input field has a special functionality - Pressing the down arrow key will shift focus from the input to the first element in the list of divs below it, moving downwards as you continue pressing the down key. Pressing enter will set the text in that div as the input value. The same goes for the up arrow key, but in reverse - shifting focus to the last element in the list and moving upwards with each press of the up key.
Experience this feature in action on my fiddle: Example
$(function(){
var $container = $('#list').children();
var pointer = 0;
function decrease(){
if(pointer == $container.length - 1) pointer = 0;
else pointer++;
moveElement();
};
function increase(){
if(pointer == 0) pointer = $container.length - 1;
else pointer--;
moveElement();
};
function selectValue(){
var selectedVal = $($container[pointer]).html();
$('inputBox').val(selectedVal);
};
function moveElement()
{
$container.removeClass('selected');
$($container[pointer]).addClass('selected');
};
// highlights first item
moveElement();
$('inputBox').on('keydown', function(e){
switch(e.keyCode)
{
case 13:
selectValue();
break;
case 40:
decrease();
break;
case 38:
increase();
break;
}
});
});
Check out the updated code on JSFiddle - http://jsfiddle.net/tt0nnzvm/4/
EDIT: Fiddle and code have been revised.
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