I 'm writing a code with JS and I don't know how to populate array when clicking on button. We have this code, which uses a list (ul), where the items (li) can be moved with mouse. How can do onclick to populate an array with 2 data, its first position and the last position?
<!doctype html>
<html lang="en">
<head>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<script src="https://raw.
github.com/furf/jquery-ui-touch-punch/master/jquery.ui.touch-punch.min.js"></script>
<script>
$(function() {
$( ".documents" ).sortable();
$( ".documents" ).disableSelection();
});
</script>
<meta charset="utf-8">
<title>toArray demo</title>
<style>
span {
color: red;
}
</style>
</head>
<body>
Reversed - <span></span>
<ul id="opciones" class="documents">
<li>uno</li>
<li>dos</li>
<li>tres</li>
</ul>
<script>
function disp( li ) {
var a = [];
for ( var i = 0; i < li.length; i++ ) {
a.push( li[ i ].innerHTML );
}
$( "span" ).text( a.join( " " ) );
}
disp( $( "li" ).toArray() );
</script>
<input type="button" value="actualizar_array" onclick="disp('#opciones')" />
</body>
</html>
